【英语时差8,16】DNA

You may already know that DNA¹ is a long molecule² found in almost every cell in your body that contains your genetic³ blueprints⁴. Encoded in the particular sequence of your DNA is a description of what kind of organism you are, how you work, and how to make more of you. DNA can be extracted from living things–run your fingernail along the inside of your cheek to harvest a DNA sample right now–or from dead remains⁵. Now, it turns out DNA can also be extracted from the soil, even without a body anywhere near. Researchers from the University of Copenhagen took a sediment⁶ core from a permafrost plain in Siberia. A “sediment core” is just a long, strait tube of earth. Imagine pushing a straw slowly into ice cream and then removing the straw: inside it would be a long thin ice cream sample. Since the surface of the earth is constantly covering itself over. With a sediment core, the lowest parts of the tube correspond to the oldest time period, while the highest parts are more recent.

1 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。

2 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。

3 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。

4 blueprints   

n.蓝图，设计图( blueprint的名词复数 )

参考例句：

• Have the blueprints been worked out? 蓝图搞好了吗？ 来自《现代汉英综合大词典》
• BluePrints description of a distributed component of the system design and best practice guidelines. BluePrints描述了一个分布式组件体系的最佳练习和设计指导方针。 来自互联网

5 remains   

n.剩余物，残留物；遗体，遗迹

参考例句：

• He ate the remains of food hungrily.他狼吞虎咽地吃剩余的食物。
• The remains of the meal were fed to the dog.残羹剩饭喂狗了。

6 sediment   

n.沉淀，沉渣，沉积(物)

参考例句：

• The sediment settled and the water was clear.杂质沉淀后，水变清了。
• Sediment begins to choke the channel's opening.沉积物开始淤塞河道口。