单词:fruit-flies
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This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. For those of you whove spent many of your waking hours this winter washing your hands and fretting about getting sick, you might be better off just stayi
Don: Some people seem to need significantly less sleep than others. Yael: Tell me about it. I have a friend who swears that she sleeps only five hours a night. If she's telling the truth, then she must be bionic. She seems to have plenty of energy, a
Time is precious. Nobody can afford to waste time. Once time has gone by, it will never return. You can never turn the clock back. Time passes very quickly. In fact, people say time flies. Time and ti
所谓pun,通常是指利用一个单词的两个含义,或者利用两个特定的单词,达到一语双关的目的。例如在下面这句话里,其中的grave有两个含义,一个是严肃的(形容词),一个是坟墓(名词),
Of course, in this century, uses for drones go far beyond war, to include surveillance, exploration, photography, racing. And one young inventor is hoping that smart drones will be able to navigate dangerous places, avoiding obstacles while searching
This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Sarah Palin on the campaign trail was at times dismissive of science. She attacked fruit fly research, saying that tax dollars were going to projects h
This is Scientific American's 60-Second Science. I'm Christopher Intagliata. Got a minute? Birds and sea turtles can migrate thousands of miles, by reading the Earth's magnetic cues. But we too might have magnetic sensing abilitiesin our eyes. So say
Fruit Fly Learning You might think those pesky little fruit flies gathering around your fresh produce every summer are too stupid to know a banana from a pear. Theyre barely large enough to see. They certainly cant have that much brain power, can the
Fruit Flies Love Alcohol! 果蝇喜欢酒精! When human females are pregnant, theyre advised to stay away from alcohol, for fear of harming the fetus. And most parents refrain from giving their infants bottles full of whiskey or beer, for obvious
Don: Some people seem to need significantly less sleep than others. Yael: Tell me about it. I have a friend who swears that she sleeps only five hours a night. If she's telling the truth, then she must be bionic. She seems to have plenty of energy, a
This is Scientific American 60 Second Science, I'm Cynthia Graber, this will just take a minute~ You know the sceneits a Friday night, and your date just canceled. Youre bummed, maybe a little hurt. You think now might be a good time for a beer, mayb
This is Scientific American 60 second Science, I'm Cynthia Graber, got a minute? Were not the only animals that like to knock back the hard stuff. Studies have shown that some mammals seek out food and drink that naturally contains alcohol. And accor
By Phuong Tran Dakar, Senegal 22 November 2006 Discovered three years ago in Kenya, an Asian fruit fly species is spreading throughout Africa, posing a threat to crops and livelihoods. Farmers and government officials are starting to devise strategi
AGRICULTURE REPORT - Controlling Fruit Flies in Hawaii By Mario Ritter Broadcast: Tuesday, March 02, 2004 This is Steve Ember with the VOA Special English Agriculture Report. Fruit flies can damage fo
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At Scripps Research Institute in Jupiter, Florida, scientists are working to find clues about how the human brain processes memories. Their laboratory test animal is not a chimp or a dog or a rat animals that we know can remember things it is the com
VOA's weekly science and technology radio magazine Art Chimes | Washington, DC 12 March 2010 Related Links IPCC InterAcademy Council Kidney donor health (JAMA) Scripps Florida APA Help Center Cornell nanotextiles lab Preserving Digital Worlds (Univ o
A gene that controls how long we sleep has been discovered by scientists explaining why some people have their own internal alarm clock. Scientists identified a gene called ABCC9 that can reduce the length of time we sleep. The same gene has previous
/f/ 唇齿摩擦辅音。发音时下唇轻触上齿,气流由唇齿间通过,形成摩擦音。这是个清辅音,发音时送气强,但声带不振动。 [] 双唇微开,舌头伸出来,上下齿轻咬住舌尖,将气流从牙齿的缝隙