时间:2018-12-30 作者:英语课 分类:托福听力短文


英语课
(MA) Now we're entering Kangaroo Country. In all, there are more than fifty different species of kangaroo, and the advantage of zoos like ours is that you see them in their natural habitat. The ones we have all live in the grasslands 1.

On my right, you can see one of the biggest types: the red kangaroo. It travels about 20 miles per hour. It looks like hard work, but hopping 2 actually lets the kangaroo conserve 3 more energy than another animal could when running on four legs. In fact, up to a certain point, the faster a kangaroo goes the more energy it conserves 4. Rather than taking more hops 5 to increase speed, the kangaroo makes the length of each jump longer.

Let's stop here for a minute. Take a look over on your right at this group of kangaroos resting. Can you see that their ears are moving? Hearing may well be the kangaroo's most important sense. Their two large ears can move independently, so sometimes one ear is pointing forward and the other toward the rear. Kangaroos' eyesight is also excellent. They have a wide field of vision and, like most grazing animals, they are especially good at detecting movement.

Before we move on, I'd like to point out one more thing: If you look closely, you can see a joey --- that's a baby kangaroo --- peering out of its mother's pouch 6. Before long that joey will be out of the pouch for good. The mother will push it out by the time it's eight months old.


n.草原,牧场( grassland的名词复数 )
  • Songs were heard ringing loud and clear over the grasslands. 草原上扬起清亮激越的歌声。 来自《现代汉英综合大词典》
  • Grasslands have been broken and planted to wheat. 草原已经开垦出来,种上了小麦。 来自《简明英汉词典》
vt.保存,保护,节约,节省,守恒,不灭
  • He writes on both sides of the sheet to conserve paper.他在纸张的两面都写字以节省用纸。
  • Conserve your energy,you'll need it!保存你的精力,你会用得着的!
n.(含有大块或整块水果的)果酱,蜜饯( conserve的名词复数 )v.保护,保藏,保存( conserve的第三人称单数 )
  • To show that the equation conserves the total volume is not difficult. 要证明该方程保持了总体积不变这点是不困难的。 来自辞典例句
  • The antimuon decay also conserves the total light and heavy lepton numbers. 在反μ子衰变中,总轻轻子数和总重轻子数也是守恒的。 来自辞典例句
跳上[下]( hop的第三人称单数 ); 单足蹦跳; 齐足(或双足)跳行; 摘葎草花
  • The sparrow crossed the lawn in a series of hops. 那麻雀一蹦一跳地穿过草坪。
  • It is brewed from malt and hops. 它用麦精和蛇麻草酿成。
n.小袋,小包,囊状袋;vt.装...入袋中,用袋运输;vi.用袋送信件
  • He was going to make a tobacco pouch out of them. 他要用它们缝制一个烟草袋。
  • The old man is always carrying a tobacco pouch with him.这老汉总是随身带着烟袋。
学英语单词
absolute optimum trajectory
accounting reorganization
almost as if
ameiotic
anti-feudal
antialexin
ascaric larva migrans of lung
bilge truss hoop
bright night
broilingly
BWK
chandrashekhar
circ
circular cross section
composite-rate
compression cap
computer-operated memory test system
convertible share
core sand moulding
Corydalis inconspicua
cowherds
cozeners
criterions
dead knot encased knot
defective matrix
differential modal attenuation
ecologically
ekra
electric ophthalmia
electron-beam recording
electrorheology
emeraldgreen
en dostyle
envassal
extremal quotient
ferricythere cocacolaria
first-order subroutine
food product
gas-bearing
gas-solid system
godcast
hammershears
head of ulna
homem
hydrogen cyanides
hymenotomy
i-hoked
IDURD
imaginary circle at infinity
impleaders
inanest
infinite slab reactor
insular faunae
jargonistic
Kings Beach
layer-build cell
Le Brouilh-Monbert
Louise Nevelson
magestad
memory word
Muhamedism
Nelson-Atkins Museum of Art
neuromuscular block
nigger toe
object name service
open frame
oversight function of a parent company
oxygen consumption gauge
paleoglaciation record
Pathfinder National Wildlife Refuge
Pennan
pneumatic suction conveyer
posten
protective groyne
quadricolor
reactor power limiter
recycle cracking operation
regenerative pulse generator
road-building bitumen
Saf-T-Coil
seedling sprout
self-sticking
Shayboveyem
showmen
silicone hose
skunky
solvent membrane
soyoil
spinner wheel
staff cost
start up accident
stripe coating
superradiant state
teleiddyn (mediaeval wales)
the vow
thibenzazoline
tide sb over
troubleshooting procedure
vane retaining ring
vertical transistor
wasp fly
xlt (greeting telegram)