时间:2018-12-28 作者:英语课 分类:初学者听力文摘精选


英语课

Fifteen hundred years ago in China, silk production was a state secret.



The silk trade was so valuable that anyone who tried to take silkworm eggs or mulberry seeds out of China was put to death. Then in 552 AD, two monks 1 smuggled 2 silkworm eggs to Constantinople, and silk production spread worldwide. Now that the secret's out, we can safely talk about how silkworms and humans make luxurious 3 silk cloth.



A silkworm actually isn't a worm at all. It's a type of caterpillar 4 that once existed in the wild, but now only survives in domesticated 5 form. Silkworms are fussy 6 eaters, dining only on mulberry leaves. When a silkworm has had its fill, it spins a cocoon 7 from a single strand 8 of silk, two to three thousand feet long!



According to legend, a Chinese empress discovered how to harvest silk when a cocoon fell into her tea. She plucked it from the teacup by the loose end of the silk, then unraveled the whole cocoon. To harvest silk commercially, cocoons 9 are first steamed to kill the pupae inside. That's because the silkworm would break the silk if it began to emerge as a moth 10. Next the cocoon is dunked in hot water--rather than tea--to dissolve the sticky coating that binds 11 the silk. Then a machine unwinds the single strand that makes up each cocoon. Twisted together, these strands 12 make the fine thread used to weave silk cloth.



Next time we'll talk about how humans have bred silkworms to behave quite unlike their caterpillar cousins in the wild.



1 monks
n.修道士,僧侣( monk的名词复数 )
  • The monks lived a very ascetic life. 僧侣过着很清苦的生活。
  • He had been trained rigorously by the monks. 他接受过修道士的严格训练。 来自《简明英汉词典》
2 smuggled
水货
  • The customs officer confiscated the smuggled goods. 海关官员没收了走私品。 来自《现代汉英综合大词典》
  • Those smuggled goods have been detained by the port office. 那些走私货物被港务局扣押了。 来自互联网
3 luxurious
adj.精美而昂贵的;豪华的
  • This is a luxurious car complete with air conditioning and telephone.这是一辆附有空调设备和电话的豪华轿车。
  • The rich man lives in luxurious surroundings.这位富人生活在奢侈的环境中。
4 caterpillar
n.毛虫,蝴蝶的幼虫
  • A butterfly is produced by metamorphosis from a caterpillar.蝴蝶是由毛虫脱胎变成的。
  • A caterpillar must pass through the cocoon stage to become a butterfly.毛毛虫必须经过茧的阶段才能变成蝴蝶。
5 domesticated
adj.喜欢家庭生活的;(指动物)被驯养了的v.驯化( domesticate的过去式和过去分词 )
  • He is thoroughly domesticated and cooks a delicious chicken casserole. 他精于家务,烹制的砂锅炖小鸡非常可口。 来自《简明英汉词典》
  • The donkey is a domesticated form of the African wild ass. 驴是非洲野驴的一种已驯化的品种。 来自《简明英汉词典》
6 fussy
adj.为琐事担忧的,过分装饰的,爱挑剔的
  • He is fussy about the way his food's cooked.他过分计较食物的烹调。
  • The little girl dislikes her fussy parents.小女孩讨厌她那过分操心的父母。
7 cocoon
n.茧
  • A cocoon is a kind of silk covering made by an insect.蚕茧是由昆虫制造的一种由丝组成的外包层。
  • The beautiful butterfly emerged from the cocoon.美丽的蝴蝶自茧中出现。
8 strand
vt.使(船)搁浅,使(某人)困于(某地)
  • She tucked a loose strand of hair behind her ears.她把一缕散发夹到了耳后。
  • The climbers had been stranded by a storm.登山者被暴风雨困住了。
9 cocoons
n.茧,蚕茧( cocoon的名词复数 )v.茧,蚕茧( cocoon的第三人称单数 )
  • The silkworms have gone into the bushes to spin their cocoons. 蚕上山了。 来自《现代汉英综合大词典》
  • In two more days the " little darlings" would spin their cocoons. 再得两天,“宝宝”可以上山。 来自汉英文学 - 春蚕
10 moth
n.蛾,蛀虫
  • A moth was fluttering round the lamp.有一只蛾子扑打着翅膀绕着灯飞。
  • The sweater is moth-eaten.毛衣让蛀虫咬坏了。
11 binds
v.约束( bind的第三人称单数 );装订;捆绑;(用长布条)缠绕
  • Frost binds the soil. 霜使土壤凝结。 来自《简明英汉词典》
  • Stones and cement binds strongly. 石头和水泥凝固得很牢。 来自《简明英汉词典》
12 strands
n.(线、绳、金属线、毛发等的)股( strand的名词复数 );缕;海洋、湖或河的)岸;(观点、计划、故事等的)部份v.使滞留,使搁浅( strand的第三人称单数 )
  • Twist a length of rope from strands of hemp. 用几股麻搓成了一段绳子。 来自《简明英汉词典》
  • She laced strands into a braid. 她把几股线编织成一根穗带。 来自《简明英汉词典》
学英语单词
a fond
absidia
acid open-hearth furnace
agency by estoppel
anti clockwise
base radix
Benedict-Theis' method
BHET
bimetal automobile instrument
bitonalities
bloodheads
BTR
Bādghīs, Velāyat-e
Cajal's method
cartoonlike
cattells
cell battery
check valve case gasket
Chotca
Clematis integrifolia
colestaff
country paper
cyanidin chloride
cyclic injection
cytokine storm
decision-making under certainty
diagnostic model
discount on bonds payable
division store
eade
enter into details
EOJ
ferrolyomesophase
flat fish-plate
gallis
genus psilophytons
geocell
Glenshee
grigoriadis
gyroscopic turn meter
halfangels
hidalgoite
holder for special bulb
hunchunite
Hypex horn
intracranial pneumatocele
isoprotein
JapaneseFloweringFernRhizome
juxtamembrane
Kidd blood group system
kinsleys
limp cloth
line-cone
loess deposit
make a public expression of
manganese(aluminium)garnet
metal-sol
metallurgical thermal engineering
micropositioners
Millington reverberation formula
moulding box closer
mri (material receiving instruction)
neckbrace
nitrogen determination apparatus
nonanxiolytic
o.r.d.
opisthen
oscillator section
plant spray oil
polltacker
prelisting
prerecorded signal
pterocles alchatas
pulmonary alveoli
raginis
real analytic local coordinates
reentry velocity
renis
respiratory moniliasis
retrap
rock-built
run-off volume
rye distillery
sakis
scotch high (land cattle)
sizing machinery
socialist press
speed setting cylinder
stick around
tavener
teased apart
the-writings
threaten with
thrift engagement
thymonoic
union of symbol
universal finishing stand
unriddles
viscoelasto-plastic material
wash-in angle
wave model
zero-power resistance