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
acronic
alternating current propulsion
aluminium dihydrogen phosphate
applied factory burden
as common as the hedge
atlacomulco
attaintment
authorized capital
bead condensation
Bondil
breached
bushbash
cacalias
calcareous cement
catastrophists
centrifugal potential energy
chemical mediator
civic right
clear hawse pipe
complaint management
consistentwiths
copybook
decidedness
declutters
Donghai Coastal Current
Donnemarie-Dontilly
electronic decelerometer
erizepine
errite
Estonian Sign Language
exchange money
family disruption
fluoroethylene resin
free of particular average English conditions
galactic cosmic radiation
gastrocolic reflex
glow lamps
Gualeguay
haliotis rufescens
herd into
hexa-net
hinghman
Houlka
intermediate spinning frame
investment center
lake st. clairs
latticed dune
leggedness
life time of energy level
lisk
maslows
memory management fault
Michaelmas
Milanaise
millepora dichotoma
milli-mass-unit
multiple address computer
Myurocloda
nightspot
nosogeography
orifice flow
owners
paradoxical pupil phenomenon
percutaneous endoscopic gastrostomy
Pop Idol
prehension (of an animal)hunt for food
Prirechensk
prostatoxin
receptor protein
remote broadcast
renie
rosy view
rotary coordinate system
self-discharging bucket
send control procedure
shared read-only system residence disk
shear rate thixotropy
silodosin
skip out on
slab-column structure
solita
soogee
standard change gear
statement of financial operations
stef
suborder alcyonaceas
support bearing
swineherder
tooth-shell
trichinelloses
tricholomoid
tunnel entrance brilliance
vad-
variable speech control
very large crude-oil carrier
vulcanizing apparatus
water-extractable acid of soil
windthorne
work cloths
work-session-initiation processing level
writ of replevin
yruled