时间:2019-01-22 作者:英语课 分类:自然百科2012年


英语课

 And for every dam, there is a new habitat for new life, and a richer, more diverse Yellowstone. 


 
But just as Yellowstone reveals the complexity 1 of life, it also exposes its fragility. On its lofty ridges 2, there are signs that all is not well with the whitebark pine. From above, it looks like autumn colors have come to an evergreen 3 world. 
 
But these trees are dying. Small eruptions 4 of resin 5 dot the trunk of the tree—evidence of an invasion. Tiny beetles 6 are chewing through the tree’s outer defences. Once inside, they lay eggs that turn into larva that eat the tree. Each tree that is lost threatens all the animals that rely on its autumn bounty 7
 
The only thing that can stop the beetles is extreme cold. But recently, the climate here has been getting warmer and warmer. No national park can protect against that.
 

n.复杂(性),复杂的事物
  • Only now did he understand the full complexity of the problem.直到现在他才明白这一问题的全部复杂性。
  • The complexity of the road map puzzled me.错综复杂的公路图把我搞糊涂了。
n.脊( ridge的名词复数 );山脊;脊状突起;大气层的)高压脊
  • The path winds along mountain ridges. 峰回路转。
  • Perhaps that was the deepest truth in Ridges's nature. 在里奇斯的思想上,这大概可以算是天经地义第一条了。
n.常青树;adj.四季常青的
  • Some trees are evergreen;they are called evergreen.有的树是常青的,被叫做常青树。
  • There is a small evergreen shrub on the hillside.山腰上有一小块常绿灌木丛。
n.喷发,爆发( eruption的名词复数 )
  • There have been several volcanic eruptions this year. 今年火山爆发了好几次。 来自《简明英汉词典》
  • Over 200 people have been killed by volcanic eruptions. 火山喷发已导致200多人丧生。 来自辞典例句
n.树脂,松香,树脂制品;vt.涂树脂
  • This allyl type resin is a highly transparent, colourless material.这种烯丙基型的树脂是一种高度透明的、无色材料。
  • This is referred to as a thixotropic property of the resin.这种特性叫做树脂的触变性。
n.甲虫( beetle的名词复数 )
  • Beetles bury pellets of dung and lay their eggs within them. 甲壳虫把粪粒埋起来,然后在里面产卵。 来自《简明英汉词典》
  • This kind of beetles have hard shell. 这类甲虫有坚硬的外壳。 来自《现代汉英综合大词典》
n.慷慨的赠予物,奖金;慷慨,大方;施与
  • He is famous for his bounty to the poor.他因对穷人慷慨相助而出名。
  • We received a bounty from the government.我们收到政府给予的一笔补助金。
学英语单词
-teenth
angular motion
appointment-only
ash-greys
autocratic leader
automatic data processing systems
Ban Nong Yang
Bandwidth-on-demand
bare the metal
basilar membranae
bonnett
catalogable permanent file
cheek retractor
chloroethylaminoanthraquinones
classical-styles
closure of simplex
collective body
community residents
copius
coraebus aesopus
crummy
cystomyxoma
dispension
disproportionateness
distrbuted processing
electro-gas arc welding
excitaton source
exhibition expenditures
false myxoma
fear-stricken
fibre grease
firiming agent
fix things up
fluidized layer
forage for
fund levy
go on an outing
graphic kernel system
gravity spectrum
gravity tectonics
green cormorant
guilt-trip
heliocentric declination
heterodyne interference
high speed steel end mill
Igo
in one piece nozzle
income-expenditures
interpretation of dreams
island-dwellers
Knelston
laid lower
lead crown glass
Leo III
linen fiber
load up on sth
lyme-hound
make gains
manufacturer's rep
mechano-chemical system
medical diagnostic radiation
metallographs
Middleton Stoney
missel-bird
Mogogelo
noas
note to the accounts
number identification
off-colo(u)r product
oystered
pal(a)eohydrology
Palespotted
pasta rocket
pasteur pipet
permineralised
planetary landing
plant room
plumbaginaceous
pulsed lasers
re-taining part of the extra profit
reed sweep
Resia
ring-a-ring
screen scarifier
sewerage of separate system
site autonomy
taint-hook
take springs out from
testing of soil
tetrazoles
think no small bear of
Tolbukhinski Okrǔg
toona sureni(bl.)merr.
total color blindness
Tristars
wages fund
wooden bridge
written calculation
yeast-liked
zero-zero gel
zhishi xiebai guizhi decoction