时间:2018-12-27 作者:英语课 分类:探索与发现2013年


英语课

 -How does it work then? There are millions of insects out there in the air you sweeping 1. You target specific individuals.-That's right, so we have an individual honey bee which will be carrying this very small fine container on its back. And that's the way of the omitted radar 2 being hit that. The little dial in the center can convert the incoming signal to a unique signal which is half of an inf*, and so we can listen to that signal with a special receiver dish and therefore just track the individual insect without being swept by echo.-That is almost as long as the a bee itself. Is it a bit too big for them?


 
-Honey bees have evolved for million years to carry heavy loads. They can pollens 3 almost half their body weight, and this tag only weighs about a tenth of its body weight, so it's very easy for them to carry that weight. It doesn't affect their behavior in any way.
But for me, seeing is believeing. The man at the other end of the experiment is Dr. Stephan Wolf.
-So, yeah, we have the bee. She can't go through, can she?
-No, she can't, you know.
-OK. She just tries. There! Is that good?
-Perfect. 
-Oh, I just hate squeezing them like that.
-Hold the transplanter at the white bit.
-At the white bit?
-Yes.
-At the bottom. OK.
-Stick it on very lightly. And here we are.
-Then she goes. Go on! It's bit like running over brown sticks on the back, isn't it?
-Perhaps.
This technology has already revealed some secrets of the life of a bee. In particular one of the greatest mysteries about these creatures how were they first leave the hive. They manage to find their way out and their way back, visiting up to 2,000 flowers in a day without getting lost.
-She's at the landscape that she's never seen before. So she starts with very small loops at the beginning around the hive and then extends these loops ever further, in order to build up a memory of the landscape that she would be able to come back to the hive.

1 sweeping
adj.范围广大的,一扫无遗的
  • The citizens voted for sweeping reforms.公民投票支持全面的改革。
  • Can you hear the wind sweeping through the branches?你能听到风掠过树枝的声音吗?
2 radar
n.雷达,无线电探测器
  • They are following the flight of an aircraft by radar.他们正在用雷达追踪一架飞机的飞行。
  • Enemy ships were detected on the radar.敌舰的影像已显现在雷达上。
3 pollens
n.花粉( pollen的名词复数 )
  • The Brownian movement of pollens also shows the fractal characteristics. 花粉的布朗运动轨迹也具有分形特征。 来自互联网
  • In contrast, C. sinensis var. sinensis and assamica couldn't be distinguished by the morphology of pollens. 至于不同地区的台湾山茶之间、或是茶与阿萨姆茶之间,皆无法以花粉形态来区分。 来自互联网
学英语单词
actual thrust
alberobelloes
alternative digital system
ampullary canals of lorenzini
argentaffin-negative
asimilobrine
average absolute puulse amplitude
average flow of domestic hot-water supply
be all dolled up and no place to go
be out of touch
bescurvy
Bordj Welvert
brachelytra
bulk carrier (bc)
burst forth
buttercup family
cd-interactive
class-aaa
clearance limit for overhead contact wire
commoditable
communications industry
concretize
cross strain
decolourising
degree of swelling
Demochristian
detrimental resistance
diarthric
dominelli
dried shark's lips
effusive flow
eilectrophysiology
electromagnetic energy
escroll
eulogization
fidler
fighting top
forest thinning
fuel experimental station
GDP dissociation stimulator
generation or cohort rate
give someone the brush
gumpy
h.ramirez
hard-to-cut material
hemiarthrosis
hepato-enteric circulation
historization
hose thread
Hévié
i-control
iambe
icrt (international community radio taipei)
initial main sequence star
isosceles trapezoids
Kalamazoo County
laytimes
learning by discovery
megaselia (aphiochaeta) grandipennis
metipranolol
modifier edit code
monoubiquitinations
native client
need one's head examining
nonconverter
normal growth
nose-wheel bay
order-made
orthotopic graft
package log
plan of land utilizaton
post-marxist
principle isotope
pseudoion
pyroglobulinemia
quincunxes
radio meteorograph
radon gas
rapid-scan monochromator
recrystallisation
region calcanea
rigidifying
San Martino di Lupari
serpentinous
she-bitches
shifting level
shottying
single side band
split stern hull form
suicide victims
sulfatase deficiency
surong
survival rate of fish fry
technocomplexes
three-step feed box
titanium carbonitride
triungulin
unalchemy
unsubscribes
veggetable electricity
walk the streets
whitegloved