VOA慢速英语1500基础单词例句zmore words

a lot of [much or many]
We had a lot of rain.

carry out [to do; to put into effect]
Please carry out the plan.

pass a bill [approve]
Congress is expected to pass a bill to cut taxes.

take steps [to start to do something]
The government will take steps to halt inflation.

(WORDS USED IN VOA SPECIAL ENGLISH SCIENCE PROGRAMS)

antibodies [special proteins, produced in the blood, that kill harmful bacteria]
The body's defense¹ system creates different antibodies for each disease it fights.

atom [a very small part of all things; the smallest part of an element that can join with parts of other elements]
All matter is made of atoms.

bacteria [living things that are one cell and can be seen only through a microscope; some cause disease]
Some bacteria cause disease.

cell [a small mass of living material that is part of all plants and animals]
All plants and animals are made of cells.

chromosome² [a line of genes³; most human cells contain 46 chromosomes⁴]
Chromosomes carry the genes that make each of us different.

compound [a substance containing two or more elements]
A compound contains two or more chemical elements.

dense⁵ [close together; thick]
Lead is a dense material.

electron [a small part of an atom that has an electrical force]
An electron is a small part of an atom.

element [one of more than 100 substances known to science that cannot be separated into other substances]
An element cannot be separated into other substances.

enzyme⁶ [a special kind of protein; it produces changes in other substances without being changed itself]
An enzyme can change other substances without being changed itself.

fetus⁷ [unborn young]
A human embryo⁸ becomes a fetus after eight weeks.

fission⁹ [a splitting; in atomic fission, the nucleus¹⁰ of an atom is split to produce nuclear energy]
Nuclear fission splits atoms to produce energy.

fusion¹¹ [a joining together; in atomic fusion, atomic particles are joined together to produce nuclear energy]
Nuclear fusion joins atoms to produce energy.

genes [parts of cells that control the growth and development of living things; genes from the mother and father are passed to the child; genes contain nucleic acid]
Genes in the cell control the growth and development of living things.

genetic¹² engineering [the science of changing the genes of a living thing]
Genetic engineering changes the genes of a living organism.

gravity [the force that pulls things toward the center]
Gravity is the force that pulls things toward the center.

image [a reproduction of the appearance of a person or thing]
An image is a picture of someone or something.

laser [an instrument that makes a thin, powerful light]
A laser makes a thin, powerful beam of light.

magnet [a piece of iron or other material that has a pulling force; this pulling force is called magnetism]
A magnet pulls on objects of iron or steel.

molecule¹³ [the smallest amount of a chemical substance that can exist]
A molecule is the smallest part of a chemical substance.

nerve [a thin piece of tissue that sends information through the body to and from the brain]
Nerves carry information between the brain and the other parts of the body.

nucleic acid [a molecule that holds the genetic information necessary for life; there are two kinds of nucleic acid: DNA¹⁴ (deoxyribonucleic acid) and RNA (ribonucleic acid)]
A molecule of nucleic acid holds the genetic information necessary for life.

nucleus [the center part of an atom or cell]
The nucleus is the center part of an atom or cell.

nutrient¹⁵ [a food or substance that makes plants, humans or animals grow]
Food is a nutrient that makes humans and animals grow.

organ [a part of the body that has a special purpose, such as the heart or brain]
The heart and the brain are organs.

organism [a living thing, often so small it can be seen only through a microscope]
An organism is a living plant or animal of any size.

particle [a very small piece of matter]
A particle is a very small piece of matter.

proteins [substances responsible for the growth of tissue and for fixing damaged tissue]
Proteins fix damaged tissue and help tissue grow.

robot [a machine that moves and performs tasks]
A robot is a machine that moves and does work.

tissue [living material; a group of cells that are similar in appearance and do the same thing]
Tissue is a group of living cells.

virus [a kind of organism that causes disease]
A virus is a tiny organism that invades cells and causes disease.

x-rays [a kind of radiation that can pass through most solid materials, often used in medicine]
X-ray radiation is used to make images of bones and tissue for medical purposes.

(SOME CHEMICAL ELEMENTS)

hydrogen: H
helium: He
carbon: C
nitrogen: N
oxygen: O
sodium¹⁶: Na
magnesium¹⁷: Mg
aluminum¹⁸: Al
silicon¹⁹: Si
phosphorus: P
sulfur²⁰: S
chlorine: Cl
potassium: K
calcium²¹: Ca
titanium: Ti

iron: 鉄　Fe
nickel: Ni
copper²²: 銅　Cu
zinc²³: Zn
silver: 銀　Ag
tin: Sn
iodine²⁴: I
platinum²⁵: Pt
gold: 金　Au
mercury: 水銀　Hg
lead: 鉛　Pb
radon: Rn
radium: 　Ra
uranium: U
plutonium: Pu

(PARTS OF THE BODY)

head:頭
hair:毛、頭髪
face:
ear:耳
mouth:口
nose:鼻
eye:目
chin:
neck:首
shoulder:肩
chest:胸
arm:腕
elbow:
wrist:手首
hand:手
thumb:
fingers:手指
leg:脚
knee:
ankle:
foot:足
toes:足指


(ORGANS OF THE BODY)

breast
The breast produces mother's milk to feed a baby.

heart
The heart pumps blood through the body.

intestines²⁶
The intestines are tubes through which food passes after it is broken down in the stomach. Part of the intestines also remove solid wastes from the body.

kidney
The kidneys clean wastes from the body.

liver
The liver makes some proteins and enzymes²⁷. It also removes poisons from the blood.

lung
The lungs take in and expel air from the body.

prostate
The prostate is a part of the male reproductive system.

stomach
The stomach breaks down food for the body to use.

uterus
The uterus is a part of the female reproductive system where a fetus develops.


(DISEASES)

AIDS:
Alzheimer's:
botulism:
cancer:
chicken pox:
cholera:
cystic fibrosis:
dengue fever:
diabetes: 糖尿病
diarrhea:
encephalitis:
hepatitis: 肝炎
influenza:
leukemia: 白血病
multiple sclerosis:
muscular dystrophy:
malaria:
measles:
meningitis:
Parkinson's:
polio:
pneumonia: 肺炎
rheumatic fever:
river blindness:
syphilis: 梅毒
tetanus: 破傷風
tuberculosis: 結核
typhoid fever:
yellow fever: 黄熱病
whooping cough:


(THE PLANETS)

North Pole: 北極
South Pole: 南極
Moon: 月
Sun: 太陽
Mercury: 水星
Venus: 金星
Earth: 地球
Mars: 火星
Jupiter: 木星
Saturn: 土星
Uranus: 天王星
Neptune: 海王星
Pluto: 冥王星

1 defense   

n.防御，保卫；[pl.]防务工事；辩护，答辩

参考例句：

• The accused has the right to defense.被告人有权获得辩护。
• The war has impacted the area with military and defense workers.战争使那个地区挤满了军队和防御工程人员。

2 chromosome   

n.染色体

参考例句：

• Chromosome material with exhibits of such behaviour is called heterochromatin.表现这种现象的染色体物质叫做异染色质。
• A segment of the chromosome may become lost,resulting in a deletion.染色体的一个片段可能会丢失，结果产生染色体的缺失。

3 genes   

n.基因( gene的名词复数 )

参考例句：

• You have good genes from your parents, so you should live a long time. 你从父母那儿获得优良的基因，所以能够活得很长。 来自《简明英汉词典》
• Differences will help to reveal the functions of the genes. 它们间的差异将会帮助我们揭开基因多种功能。 来自英汉非文学 - 生命科学 - 生物技术的世纪

4 chromosomes   

n.染色体( chromosome的名词复数 )

参考例句：

• Chromosomes also determine the sex of animals. 染色体也决定动物的性别。 来自《简明英汉词典》
• Each of four chromosomes divide longitudinally. 四种染色体的每一种都沿着纵向分裂。 来自《现代汉英综合大词典》

5 dense   

a.密集的，稠密的，浓密的；密度大的

参考例句：

• The general ambushed his troops in the dense woods. 将军把部队埋伏在浓密的树林里。
• The path was completely covered by the dense foliage. 小路被树叶厚厚地盖了一层。

6 enzyme   

n.酵素，酶

参考例句：

• Above a certain temperature,the enzyme molecule will become unfolded.超过一定温度，酶分子将会展开。
• An enzyme that dissolves the fibrin of blood clots.能溶解血凝块中的纤维的酶。

7 fetus   

n.胎，胎儿

参考例句：

• In the fetus,blood cells are formed in different sites at different ages.胎儿的血细胞在不同时期生成在不同的部位。
• No one knows why a fetus is not automatically rejected by the mother's immune system. 没有人知道为什么母亲的免疫系统不会自动排斥胎儿。

8 embryo   

n.胚胎，萌芽的事物

参考例句：

• They are engaging in an embryo research.他们正在进行一项胚胎研究。
• The project was barely in embryo.该计划只是个雏形。

9 fission   

n.裂开；分裂生殖

参考例句：

• The fission of the cell could be inhibited with certain chemicals.细胞的裂变可以通过某些化学药品加以抑制。
• Nuclear fission releases tremendous amounts of energy.核裂变释放出巨大的能量。

10 nucleus   

n.核，核心，原子核

参考例句：

• These young people formed the nucleus of the club.这些年轻人成了俱乐部的核心。
• These councils would form the nucleus of a future regime.这些委员会将成为一个未来政权的核心。

11 fusion   

n.溶化；熔解；熔化状态，熔和；熔接

参考例句：

• Brass is formed by the fusion of copper and zinc. 黄铜是通过铜和锌的熔合而成的。
• This alloy is formed by the fusion of two types of metal.这种合金是用两种金属熔合而成的。

12 genetic   

adj.遗传的，遗传学的

参考例句：

• It's very difficult to treat genetic diseases.遗传性疾病治疗起来很困难。
• Each daughter cell can receive a full complement of the genetic information.每个子细胞可以收到遗传信息的一个完全补偿物。

13 molecule   

n.分子，克分子

参考例句：

• A molecule of water is made up of two atoms of hygrogen and one atom of oxygen.一个水分子是由P妈̬f婘̬ 妈̬成的。
• This gives us the structural formula of the molecule.这种方式给出了分子的结构式。

14 DNA   

(缩)deoxyribonucleic acid 脱氧核糖核酸

参考例句：

• DNA is stored in the nucleus of a cell.脱氧核糖核酸储存于细胞的细胞核里。
• Gene mutations are alterations in the DNA code.基因突变是指DNA密码的改变。

15 nutrient   

adj.营养的，滋养的；n.营养物，营养品

参考例句：

• Magnesium is the nutrient element in plant growth.镁是植物生长的营养要素。
• The roots transmit moisture and nutrient to the trunk and branches.根将水分和养料输送到干和枝。

16 sodium   

n.（化）钠

参考例句：

• Out over the town the sodium lights were lit.在外面，全城的钠光灯都亮了。
• Common salt is a compound of sodium and chlorine.食盐是钠和氯的复合物。

17 magnesium   

n.镁

参考例句：

• Magnesium is the nutrient element in plant growth.镁是植物生长的营养要素。
• The water contains high amounts of magnesium.这水含有大量的镁。

18 aluminum   

n.(aluminium)铝

参考例句：

• The aluminum sheets cannot be too much thicker than 0.04 inches.铝板厚度不能超过0.04英寸。
• During the launch phase,it would ride in a protective aluminum shell.在发射阶段，它盛在一只保护的铝壳里。

19 silicon   

n.硅(旧名矽)

参考例句：

• This company pioneered the use of silicon chip.这家公司开创了使用硅片的方法。
• A chip is a piece of silicon about the size of a postage stamp.芯片就是一枚邮票大小的硅片。

20 sulfur   

n.硫，硫磺（=sulphur）

参考例句：

• Sulfur emissions from steel mills become acid rain.炼钢厂排放出的硫形成了酸雨。
• Burning may produce sulfur oxides.燃烧可能会产生硫氧化物。

21 calcium   

n.钙(化学符号Ca)

参考例句：

• We need calcium to make bones.我们需要钙来壮骨。
• Calcium is found most abundantly in milk.奶含钙最丰富。

22 copper   

n.铜；铜币；铜器；adj.铜(制)的；(紫)铜色的

参考例句：

• The students are asked to prove the purity of copper.要求学生们检验铜的纯度。
• Copper is a good medium for the conduction of heat and electricity.铜是热和电的良导体。

23 zinc   

n.锌；vt.在...上镀锌

参考例句：

• Brass is formed by the fusion of copper and zinc.黄铜是通过铜和锌的熔合而成的。
• Zinc is used to protect other metals from corrosion.锌被用来保护其他金属不受腐蚀。

24 iodine   

n.碘，碘酒

参考例句：

• The doctor painted iodine on the cut.医生在伤口上涂点碘酒。
• Iodine tends to localize in the thyroid.碘容易集于甲状腺。

25 platinum   

n.白金

参考例句：

• I'll give her a platinum ring.我打算送给她一枚白金戒指。
• Platinum exceeds gold in value.白金的价值高于黄金。

26 intestines   

n.肠( intestine的名词复数 )

参考例句：

• Perhaps the most serious problems occur in the stomach and intestines. 最严重的问题或许出现在胃和肠里。 来自辞典例句
• The traps of carnivorous plants function a little like the stomachs and small intestines of animals. 食肉植物的捕蝇器起着动物的胃和小肠的作用。 来自辞典例句

27 enzymes   

n. 酶，酵素

参考例句：

• It was said that washing powders containing enzymes remove stains more efficiently. 据说加酶洗衣粉除污更有效。
• Among the enzymes which are particularly effective are pepsin, papain. 在酶当中特别有效的是胃朊酶、木瓜酶。