时间:2019-01-22 作者:英语课 分类:自然百科2010年


英语课

 It's a grim end to a short life, but many of the surviving calves 1 will face a more terrifying death. 


 
In the Mara River, another migration 2 is culminating. Crocodiles have memorized when and where the wildebeests will try to cross. They have gathered in massive numbers, waiting, watching and hungering for what's to come. 
 
While the wildebeest migration has converged 3 on a small crossroad of terror versus 4 hunger, the monarch 5 butterfly migration has spread to fill a continent. The second, third generations of monarchs 6 have been moving progressively north. They have fanned out across North America, and the migration has reached its tipping point. It's August, time for the super generation to be born and to take the species all the way back to the Mexico. Tattered 7 females alight, their brilliance 8 dimmed by the arduous 9 flight. One by one, the female lays her 200 eggs. She deposits them on the leaves of milkweed, ensuring the hatchlings will have a ready supply of food to fuel the marathon ahead. These new travelers will be different, living 10 times longer than their parents. Only longevity 10 and uncanny endurance can take them back to Mexico, this time, in a single generation.

n.(calf的复数)笨拙的男子,腓;腿肚子( calf的名词复数 );牛犊;腓;小腿肚v.生小牛( calve的第三人称单数 );(冰川)崩解;生(小牛等),产(犊);使(冰川)崩解
  • a cow suckling her calves 给小牛吃奶的母牛
  • The calves are grazed intensively during their first season. 小牛在生长的第一季里集中喂养。 来自《简明英汉词典》
n.迁移,移居,(鸟类等的)迁徙
  • Swallows begin their migration south in autumn.燕子在秋季开始向南方迁移。
  • He described the vernal migration of birds in detail.他详细地描述了鸟的春季移居。
v.(线条、运动的物体等)会于一点( converge的过去式 );(趋于)相似或相同;人或车辆汇集;聚集
  • Thousands of supporters converged on London for the rally. 成千上万的支持者从四面八方汇聚伦敦举行集会。
  • People converged on the political meeting from all parts of the city. 人们从城市的四面八方涌向这次政治集会。 来自《简明英汉词典》
prep.以…为对手,对;与…相比之下
  • The big match tonight is England versus Spain.今晚的大赛是英格兰对西班牙。
  • The most exciting game was Harvard versus Yale.最富紧张刺激的球赛是哈佛队对耶鲁队。
n.帝王,君主,最高统治者
  • The monarch's role is purely ceremonial.君主纯粹是个礼仪职位。
  • I think myself happier now than the greatest monarch upon earth.我觉得这个时候比世界上什么帝王都快乐。
君主,帝王( monarch的名词复数 )
  • Monarchs ruled England for centuries. 世袭君主统治英格兰有许多世纪。
  • Serving six monarchs of his native Great Britain, he has served all men's freedom and dignity. 他在大不列颠本国为六位君王服务,也为全人类的自由和尊严服务。 来自演讲部分
adj.破旧的,衣衫破的
  • Her tattered clothes in no way detracted from her beauty.她的破衣烂衫丝毫没有影响她的美貌。
  • Their tattered clothing and broken furniture indicated their poverty.他们褴褛的衣服和破烂的家具显出他们的贫穷。
n.光辉,辉煌,壮丽,(卓越的)才华,才智
  • I was totally amazed by the brilliance of her paintings.她的绘画才能令我惊歎不已。
  • The gorgeous costume added to the brilliance of the dance.华丽的服装使舞蹈更加光彩夺目。
adj.艰苦的,费力的,陡峭的
  • We must have patience in doing arduous work.我们做艰苦的工作要有耐性。
  • The task was more arduous than he had calculated.这项任务比他所估计的要艰巨得多。
n.长命;长寿
  • Good habits promote longevity.良好的习惯能增长寿命。
  • Human longevity runs in families.人类的长寿具有家族遗传性。
学英语单词
accompushments
amplitude ratio-phase difference instrument
anisamide
antigedades
backbar
bashing on
bearing indication
beauvallon
boiling-water
Brevibloc
camp sheeting
candle stick
card reeler
CEW
clearing of accounts
client priority
communistled
compeed
compression of light pulse
couseranite
data flow
Dexasine
disgraciously
disprisoning
Dixonian
eat right
ecbasis
entraining plume
equity share
facultative anaerobes
family therapeutics
febris rubra
floating channel
flotation column
flys
fucko
fund remittance and transfer
gangrenous stomatitis
germylidenes
gingival separator
high energy level pile
hour-hand
human skin
impulsive neurosis
indeprehensible
indifferent air mass
insurance-relateds
intragastrically
Inverness capes
jolliment
k homogeneous grammar
kawamoto
Khvosh Maqām
lagopodous
landing over obstacle
leveraged contract in foreign exchange
Machupicchu
make sail
marine seepage
mechanical friction
midflow
nephometer
Nitropotasse
non-scene
nonlinear deformation
not good enough to
nucleolform
oletimol
ottey
P-anisidine value
phlordzinize
Ponchon-Savarit diagram
Pontchartrain, L.
precisionists
radio sensor
real-value item
recessing-tool
reduction cell
reverting
rotating cylinder (pneumatic)
sandcloth
Sap-flow
sclerospora miscanthi
scorner
secondary focusing
sell for
semi-direct fired pulverizing system
SI batch file service
snipe fish
South Whittier
stealthie
stock base
subapical initial
thomisidae
tire-pressure gauge
towell
twisting(cleland 1949)
Upper Voltans
water-sop
winter moth
XRE
zappily