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英语听力:自然百科探索世界奥秘之Wild Africa - Deserts(浩瀚沙漠) Unit07

时间:2020-03-04 17:47来源:互联网 提供网友:nan   字体: [ ]
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    (单词翻译:双击或拖选)

In spring , the desert undergoes a remarkable1 transformation2.

For just a few weeks a year, the flowers of over 3, 000 different plant species turn this desert into the Garden of Africa.

This dazzling variety of color has evolved over time for a very special purpose -- for plants to seduce3 their insect pollinators.

Some extraordinary relationships have been forged. The bright purple blossoms of Lapeirousia are designed purely4 to attract the fly with the longest tongue in Africa. As the fly probes for a sip5 of nectar in the long floral tubes, pollen6 is dabbed7 onto its forehead. A smart design, but on a windy day, it's not so easy to hit the target.

Diascia flowers use not nectar but nutritious8 oils secreted9 by glands10 at the tips of their floral tubes to tempt11 pollinators. Flower and bee, in this case, a perfect fit as the insect dips its toes for oil.

Ignited by the rain, the flowering of the Karoo touches the lives of all its inhabitants. Brandt's whistling rats are quick to harvest the blossoms around their burrows12.

These desert rats time their breeding to the birth of fresh food, but with snakes around, mothers can't risk leaving their youngsters at home. Clinging to her nipples, they're carried along, a sort of meals on wheels.

words and expression:

1.pollinator:animals or objects that can pollinate授粉者

2.lapeirousia

3.nectar:a sweet liquid secretion13 that is attractive to pollinators 花蜜

4.dab:apply (usually a liquid) to a surface轻拍

(eg.)dab the wall with paint,dab cheek with rouge14

5.diascia

6.gland:An organ which secretes15 or separates some peculiar16 product from the blood or sap of animals or plants胰腺,腺体

7.nipple:In anatomy17, the small raised area in the center of the breast through which milk can flow to the outside乳头

8.meals on wheels:Meals on Wheels is the name of a nutrition program available in several countries which delivers a meal to the home of an individual, usually a senior age 60 or older, who is unable to purchase or prepare meals themself上门送餐服务

illustration:lapeirousia and diascia


点击收听单词发音收听单词发音  

1 remarkable 8Vbx6     
adj.显著的,异常的,非凡的,值得注意的
参考例句:
  • She has made remarkable headway in her writing skills.她在写作技巧方面有了长足进步。
  • These cars are remarkable for the quietness of their engines.这些汽车因发动机没有噪音而不同凡响。
2 transformation SnFwO     
n.变化;改造;转变
参考例句:
  • Going to college brought about a dramatic transformation in her outlook.上大学使她的观念发生了巨大的变化。
  • He was struggling to make the transformation from single man to responsible husband.他正在努力使自己由单身汉变为可靠的丈夫。
3 seduce ST0zh     
vt.勾引,诱奸,诱惑,引诱
参考例句:
  • She has set out to seduce Stephen.她已经开始勾引斯蒂芬了。
  • Clever advertising would seduce more people into smoking.巧妙策划的广告会引诱更多的人吸烟。
4 purely 8Sqxf     
adv.纯粹地,完全地
参考例句:
  • I helped him purely and simply out of friendship.我帮他纯粹是出于友情。
  • This disproves the theory that children are purely imitative.这证明认为儿童只会单纯地模仿的理论是站不住脚的。
5 sip Oxawv     
v.小口地喝,抿,呷;n.一小口的量
参考例句:
  • She took a sip of the cocktail.她啜饮一口鸡尾酒。
  • Elizabeth took a sip of the hot coffee.伊丽莎白呷了一口热咖啡。
6 pollen h1Uzz     
n.[植]花粉
参考例句:
  • Hummingbirds have discovered that nectar and pollen are very nutritious.蜂鸟发现花蜜和花粉是很有营养的。
  • He developed an allergy to pollen.他对花粉过敏。
7 dabbed c669891a6c15c8a38e0e41e9d8a2804d     
(用某物)轻触( dab的过去式和过去分词 ); 轻而快地擦掉(或抹掉); 快速擦拭; (用某物)轻而快地涂上(或点上)…
参考例句:
  • She dabbed her eyes and blew her nose. 她轻轻擦了几下眼睛,擤了擤鼻涕。
  • He dabbed at the spot on his tie with a napkin. 他用餐巾快速擦去领带上的污点。
8 nutritious xHzxO     
adj.有营养的,营养价值高的
参考例句:
  • Fresh vegetables are very nutritious.新鲜蔬菜富于营养。
  • Hummingbirds have discovered that nectar and pollen are very nutritious.蜂鸟发现花蜜和花粉是很有营养的。
9 secreted a4714b3ddc8420a17efed0cdc6ce32bb     
v.(尤指动物或植物器官)分泌( secrete的过去式和过去分词 );隐匿,隐藏
参考例句:
  • Insulin is secreted by the pancreas. 胰岛素是胰腺分泌的。
  • He secreted his winnings in a drawer. 他把赢来的钱藏在抽届里。 来自《简明英汉词典》
10 glands 82573e247a54d4ca7619fbc1a5141d80     
n.腺( gland的名词复数 )
参考例句:
  • a snake's poison glands 蛇的毒腺
  • the sebaceous glands in the skin 皮脂腺
11 tempt MpIwg     
vt.引诱,勾引,吸引,引起…的兴趣
参考例句:
  • Nothing could tempt him to such a course of action.什么都不能诱使他去那样做。
  • The fact that she had become wealthy did not tempt her to alter her frugal way of life.她有钱了,可这丝毫没能让她改变节俭的生活习惯。
12 burrows 6f0e89270b16e255aa86501b6ccbc5f3     
n.地洞( burrow的名词复数 )v.挖掘(洞穴),挖洞( burrow的第三人称单数 );翻寻
参考例句:
  • The intertidal beach unit contains some organism burrows. 潮间海滩单元含有一些生物潜穴。 来自辞典例句
  • A mole burrows its way through the ground. 鼹鼠会在地下钻洞前进。 来自辞典例句
13 secretion QDozG     
n.分泌
参考例句:
  • Is there much secretion from your eyes?你眼里的分泌物多吗?
  • In addition,excessive secretion of oil,water scarcity are also major factors.除此之外,油脂分泌过盛、缺水也都是主要因素。
14 rouge nX7xI     
n.胭脂,口红唇膏;v.(在…上)擦口红
参考例句:
  • Women put rouge on their cheeks to make their faces pretty.女人往面颊上涂胭脂,使脸更漂亮。
  • She didn't need any powder or lip rouge to make her pretty.她天生漂亮,不需要任何脂粉唇膏打扮自己。
15 secretes b951c7cca7237b8e550dc03599b78b6f     
v.(尤指动物或植物器官)分泌( secrete的第三人称单数 );隐匿,隐藏
参考例句:
  • The pineal gland secretes melanin during times of relaxation and visualization. 松果体在放松时分泌黑色素是明白无误的。 来自互联网
  • For example, the archegonium (female organ) of the moss Funaria secretes sucrose. 例如藓类颈卵器(雌性器官)分泌蔗糖。 来自互联网
16 peculiar cinyo     
adj.古怪的,异常的;特殊的,特有的
参考例句:
  • He walks in a peculiar fashion.他走路的样子很奇特。
  • He looked at me with a very peculiar expression.他用一种很奇怪的表情看着我。
17 anatomy Cwgzh     
n.解剖学,解剖;功能,结构,组织
参考例句:
  • He found out a great deal about the anatomy of animals.在动物解剖学方面,他有过许多发现。
  • The hurricane's anatomy was powerful and complex.对飓风的剖析是一项庞大而复杂的工作。
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