时间:2019-01-22 作者:英语课 分类:自然百科2009年


英语课

 Some birds are better at hunting than others and this male clearly isn't the best. He was her mate last year as well. Could his idle nature be the reason why last year's clutch failed? The chicks should be growing exponentially, yet they are getting noticeably hungry. The female was agitated 1. She looks for food that he may have stashed 2 away, but there is nothing. It was at this time last year that their two chicks died, and he's now spending this critical time primming 3.


 
Their flight feathers are beginning to grow and prolonged hunger at this age could weaken them. For a gyrfalcon, strong flight feathers are vital. It's time for the mother to take things into her own hands and start hunting too.
 
She uses her immensely powerful wingbeat to gain height. Her incredible eyesight allows her to watch the ground below without being seen herself. Even at 1,500 feet, she can detect the slightest movement below. If the hares don't move, they are safe.
 
Once she identifies a target, she moves into the sun, so she can't be seen. That's only half the battle won. She now has to carry her kill miles back to the nest.

adj.被鼓动的,不安的
  • His answers were all mixed up,so agitated was he.他是那样心神不定,回答全乱了。
  • She was agitated because her train was an hour late.她乘坐的火车晚点一个小时,她十分焦虑。
v.贮藏( stash的过去式和过去分词 );隐藏;藏匿;藏起
  • She has a fortune stashed away in various bank accounts. 她有一大笔钱存在几个不同的银行账户下。
  • She has a fortune stashed away in various bank accounts. 她在不同的银行账户上秘密储存了一大笔钱。 来自《简明英汉词典》
v.循规蹈矩的( prim的现在分词 );整洁的;(人)一本正经;循规蹈矩地,整洁地
学英语单词
aberrant cycle
absolute frequencies
actual dishonour
Ae.E.
allelgic asthma
arteria renalis
atemporality
automatic system initiation
Back water!
bimoment
blastclastic
borrowing venture
building hardware factory
busie
caldron
censored sample
cherkassy (cherkasy)
citrus obovoidea hort ex takahashi
coming under
corn-snake
cotton prints
cowntewery
cumi-cumi
cyanopindolol
Cycloheterophyllin
Cyclomet
dcvb
deer-skin
desulfitobacterium
directional antenna
dossie
driven element
Earlton
electromotive robot
epiplasm
epoxy spray coating machine
fantasizers
farmland shelter forest
fibre optic faced tube
foreordinated
freel
fullycharged
gazebolike
genitalization
geothermal exploration
ground unit
handpicks
hard-gloss paint
hebin
Hetaeria elongata
high flux heater
holcom
horsejockey
howrahs
human performance times (hpt)
hypomelanoses
impermissive
issue identification
Kochmes
kr.
labor health
light excitation
MEDINET-D
mill head assay
ministry of economic affairs
Mister nice-guy
moor light
N-9
neptunium
nunez
options trading exchange participant
Ouatagouna
overall treatment time
pencil-necks
personal error
porefield
radio frequency relay
read zero
recording supervisor
regulating ring
safety monkey
scale peripheral associated cells
servo swap
shooting through
skenoscop
snow swamp
soap shaving machine
soopolallie
spaced boarding
Sphenophyllales
Spinachitina
stalin (donetsk)
sulphonphthalein
tail shealth
take the arm
tanker airplane
tourings
universal stimulus display instrument
unlawful oath
vacking
well-sifted
worm drive