时间:2019-01-08 作者:英语课 分类:Scientific American(六)月


英语课

 This is Scientific American's 60 seconds science. I'm Kellen Horgon. This will just take a minute.


 
Have you ever wondered what happens to mosquitos in the rain, a raindrop is like 15 times heavier than those little suckers. So getting hit by one, he's got a hurt, right? Well, not so much. Because researchers at George Tech found that the bugs 2 are so light, speeding water drops simply brush them aside without imparting much force. The results are appearing the proceedings 3 of national academy of sciences. Previous days have shown the precipitation can be a real pain for a lot of winter craters(winged critters), that has spend twice as much energy of flying through the storm than in a clear skys. But what about bugs no bigger than the raindrops themselves. Researchers use high speed video to watch mosquitos went in the rain, more through a spray of mist in a lab.  They saw when a mosquito in waterdrop meet, the insect basically hitches 4 a right for bit, before peeling off unharmed. 
 
so, the bugs go with a flow and offer a little resistance, and the drop slow is only slightly, keeping its kinetic 5 energy rather than the blasting the bug 1, so for storm trooping mosquitos, resistance is not only futile 6, it's all wet. 

n.虫子;故障;窃听器;vt.纠缠;装窃听器
  • There is a bug in the system.系统出了故障。
  • The bird caught a bug on the fly.那鸟在飞行中捉住了一只昆虫。
adj.疯狂的,发疯的n.窃听器( bug的名词复数 );病菌;虫子;[计算机](制作软件程序所产生的意料不到的)错误
  • All programs have bugs and need endless refinement. 所有的程序都有漏洞,都需要不断改进。 来自《简明英汉词典》
  • The sacks of rice were swarming with bugs. 一袋袋的米里长满了虫子。 来自《简明英汉词典》
n.进程,过程,议程;诉讼(程序);公报
  • He was released on bail pending committal proceedings. 他交保获释正在候审。
  • to initiate legal proceedings against sb 对某人提起诉讼
暂时的困难或问题( hitch的名词复数 ); 意外障碍; 急拉; 绳套
  • He hitches a lift with a long - distance truck. 他搭上了一辆长途卡车。
  • One shoulder hitches upward in a shrug. 她肩膀绷紧,然后耸了耸。
adj.运动的;动力学的
  • There exist many sources of energy both potential and kinetic.存在着许多势能和动能的能源。
  • The kinetic theory of gases is the best known example.气体动力学理论就是最有名的例子。
adj.无效的,无用的,无希望的
  • They were killed,to the last man,in a futile attack.因为进攻失败,他们全部被杀,无一幸免。
  • Their efforts to revive him were futile.他们对他抢救无效。
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5-FDUR
achilus
actual center gravity
adjustable angle square
airscrew thrust
Alagoa Nova
alimentary abstinence
allodapic
American black bear
audit efficiency
BBC One
be bursting to
bergy bit
bostrychopsis parallela
central down-comer
cheese curls
college role
colo(u)r fastness to nitrogen oxides
conally
conditional failure rate
COPAC
creosote
cylindrical component
depletion of value
dicephalic
discriminating order
dyety
endemious
engi
farquhar
gill rot
global society
halpenny
hand force
high efficiency deoxidiser
humidity effect
ideal ratio
inflection temperature
initial light current
interdiscipline space science
internationalizes
jarvs
karass
kenan
keying action
large scale theory
linear recombination
maldanid
malt-maker
man-made-material
metacarpal bones (i-v)
microzymes
mold buggy
multiple output change flow table
mulus
noise peak limiter
North filter
Oberjochpass
one-book
oplophorous
orthogonal node
oxidative flame
oxide sealing
panthera leos
permissible mean maximum pressure
precurrent marking
presymptomatic
quasiequatorial
redistribution of stresses
ribbon gage
Rogernomically
runcinatus
sabliere
Salmās
sand hornet
scales back
schlumberger spread
sea-anglings
seasonal flu
selectional
service modem
shutdown temperature
smooty
spacesuits
spinae pedis
strophanthus cardiac glycoside
supervision and administration
surveyors
Symplocos modesta
thick-shelled fold
thrutty
tick paralysis
trick
tridecyls
unfavourable
unrimple
usage rights
vapour-cycle cooling
wood lemming
wrongfully declared cargo
Zener breakdown theory