时间:2018-12-07 作者:英语课 分类:浩瀚沙漠


英语课

In spring , the desert undergoes a remarkable 1 transformation 2.

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 seduce 3 their insect pollinators.

Some extraordinary relationships have been forged. The bright purple blossoms of Lapeirousia are designed purely 4 to attract the fly with the longest tongue in Africa. As the fly probes for a sip 5 of nectar in the long floral tubes, pollen 6 is dabbed 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 nutritious 8 oils secreted 9 by glands at the tips of their floral tubes to tempt 11 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 burrows 12.

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.

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

2.lapeirousia

3.nectar:a sweet liquid secretion 13 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 rouge

5.diascia

6.gland:An organ which secretes 14 or separates some peculiar 15 product from the blood or sap of animals or plants胰腺,腺体

7.nipple:In anatomy 16, 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



1 remarkable
adj.显著的,异常的,非凡的,值得注意的
  • 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
n.变化;改造;转变
  • 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
vt.勾引,诱奸,诱惑,引诱
  • 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
adv.纯粹地,完全地
  • 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
v.小口地喝,抿,呷;n.一小口的量
  • 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
n.[植]花粉
  • 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
(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)…
  • 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
adj.有营养的,营养价值高的
  • 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
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
  • 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
n.腺( gland的名词复数 )
  • a snake's poison glands 蛇的毒腺
  • the sebaceous glands in the skin 皮脂腺
11 tempt
vt.引诱,勾引,吸引,引起…的兴趣
  • 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
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
  • 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
n.分泌
  • 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 secretes
v.(尤指动物或植物器官)分泌( secrete的第三人称单数 );隐匿,隐藏
  • 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
15 peculiar
adj.古怪的,异常的;特殊的,特有的
  • 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。
16 anatomy
n.解剖学,解剖;功能,结构,组织
  • 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。
学英语单词
acetylthiocholine
adult stem cell
Annonay
Anoectochilus yungianus
auditory image
baileyana
ballets russes de monte carlo
be slaughtered
below bridge
bride-chamber
brownify
bulb eraser or degausser
but net
carbaborane
circullar morred net
comprehensive physical examination
condensation value
consecutive sequency computer
continuity of behavior
core end plate
coupled wave
Culross
defibrates
demand staging
determinantal
diffuser lip
dimenformon
Dipsocoromorpha
disk library
dispensational
Douglas protractor
electron doublet
elenctic
entertainment center
eocnomic statistics
erratic element
ethnopharmaceutical
exceptation
experimental media
extravolution
fragrans
galeoocorys echinophorella suzumai
galianoes
general-purpose flip-flop
hagiophobia
iglu
importer's entry of goods
in curia
indicated hydrogen
ion back-scattering spectroscopy (ibs)
Johor Lama
Kamskoye Vdkh.
kinnekinic
kithnos (kythnos)
Konotop
kyongsangs
lapidofacies
liquor up
loop algorithm
Mactra
maintenance pack
make-up water dealkalization
Malantouen
mental job
mentigerous
MIS structure
mixer leverman
molecular linkage
moment arm
nationally-recognised
NEUT (neutralizing)
Nieuw-Vennep
no-gos
nonspecific afferent system
not so
ormsbee
parasitic otitis
pig-nose turtles
postpartum examination
prismognathus davidis cheni
psychopathia chirurgicalis
punctiform colonies
radiohydrology
raised point
redus
soccage
sound change
span-wise lift distribution
statement line
supranationality
suskind
tea card
ten-o'clock
to turn down
under frequency operation
under the leadership of
uninsured
uphill work
valvular vegetation
white-heart
Zborov
zircon flour