2009年Scientific American's Six

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Mosquitoes carry nasty diseasesdengue fever, west nile, malaria. But the microbes that cause those diseases dont attach themselves to the mosquitoes an

发表于:2019-01-08 / 阅读(253) / 评论(0) 分类 Scientific American(一)月

This is Scientific American's 60-Second Science. I'm Steve Mirsky . Got a minute ? We residents of the Milky Way should have a little extra skip in our step today. Turns out our home galaxy is much bigger and moving a lot faster than we previously th

发表于:2019-01-08 / 阅读(237) / 评论(0) 分类 Scientific American(一)月

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. If we want to learn more about our planet and other planets in the universe, we can get some help from stars that are long dead and gone. Thats what U.

发表于:2019-01-08 / 阅读(198) / 评论(0) 分类 Scientific American(一)月

This is Scientific American's 60-Second Science. I'm Adam Hinterthuer. Got a minute? Man-made light sources can really throw animals for a loop. Moths can't tear themselves away from lightbulbs, and newly hatched sea turtles often shun moonlit ocean

发表于:2019-01-08 / 阅读(237) / 评论(0) 分类 Scientific American(一)月

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Aspirin is a popular painkiller, and chances are you have some in your medicine chest right now. You might even have some in your flesh-and-blood, put-a-

发表于:2019-01-08 / 阅读(197) / 评论(0) 分类 Scientific American(一)月

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Have you ever turned off your lights and heard [mosquito buzz]? To you its a sound that signals bites in the night. But to a male mosquito its a love son

发表于:2019-01-08 / 阅读(201) / 评论(0) 分类 Scientific American(一)月

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Thousands of medieval European books survive to this day. Authors and scribes carefully handwrote the works on parchments made of animal skins. But the

发表于:2019-01-08 / 阅读(207) / 评论(0) 分类 Scientific American(一)月

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. A bird in flight is a thing of beauty. Even their takeoffs and landings usually look effortless. But pterodactyls? Well, thats another story. Scientists

发表于:2019-01-08 / 阅读(199) / 评论(0) 分类 Scientific American(一)月

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. When we think about how to represent sound visually, most of us probably picture those volume-dependent sine waves. But thats not how John Stuart Reid

发表于:2019-01-08 / 阅读(230) / 评论(0) 分类 Scientific American(一)月

This is Scientific American's 60-Second Science. I'm Adam Hinterthuer. Got a minute? Forget the scalpel, researchers at Johns Hopkins University have created a tool that can move easily through tissue, potentially making biopsies much less invasive.

发表于:2019-01-08 / 阅读(224) / 评论(0) 分类 Scientific American(一)月

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Theres definitely methane on Marsand there are seasonal variations of how much is being released into the thin Martian atmosphere. Which means that Mar

发表于:2019-01-08 / 阅读(196) / 评论(0) 分类 Scientific American(一)月

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. A new study with worms shows that some have a gene that helps them stave off infections. Not through some kind of biochemistrybut by changing their behav

发表于:2019-01-08 / 阅读(212) / 评论(0) 分类 Scientific American(一)月

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. For years, scientists and physicians have been up in arms about the rise in antibiotic resistance. Seems that many bacteria, devious buggers that they ar

发表于:2019-01-08 / 阅读(215) / 评论(0) 分类 Scientific American(一)月

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. If you have a dog, you know you gotta walk it. But do you know how it walks? Well, if you have no idea which foot Fido puts forward when, youre in good c

发表于:2019-01-08 / 阅读(222) / 评论(0) 分类 Scientific American(二)月

This is Scientific American's 60-Second Science. I'm Adam Hinterthuer. Got a minute? Mosquitoes have an unwitting new ally in the war on infectious diseasesconservationists. Turns out that, for mosquitoes carrying dengue-fever, environmentally consci

发表于:2019-01-08 / 阅读(220) / 评论(0) 分类 Scientific American(二)月

Transcript This is Scientific American's 60-Second Science. I'm Steve Mirsky . Got a minute ? Nearly 20 percent of servicemen and women returning from Iraq and Afghanistan report symptoms of post-traumatic stress or major depression. Another 19 perce

发表于:2019-01-08 / 阅读(244) / 评论(0) 分类 Scientific American(二)月

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Its good to be the Queen. You get fed and cared for and generally treated like royalty. But if youre a blue butterfly caterpillar, you can get the same b

发表于:2019-01-08 / 阅读(206) / 评论(0) 分类 Scientific American(二)月

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. In the hit movie Slumdog Millionaire, the star answers game show questions correctly based on his life experiences. At least one right answer, however,

发表于:2019-01-08 / 阅读(213) / 评论(0) 分类 Scientific American(二)月

This is Scientific American's 60-Second Science. I'm Adam Hinterthuer. Got a minute? Heres a novel potential public health measure against the flukick up the humidity. The cold, dry months of winter signal the start of flu season. But previous resear

发表于:2019-01-08 / 阅读(241) / 评论(0) 分类 Scientific American(二)月

This is Scientific American's 60-Second Science. I'm Christie Nicholson . Got a minute? The lure of gambling clearly comes from the chance of winning. But how exciting is it to almost win? A study in the February 12th issue of the journal Neuron look

发表于:2019-01-08 / 阅读(263) / 评论(0) 分类 Scientific American(二)月
学英语单词
-right
76
a-glitter
AC interference
aetolias
AGAC
alloy diffused base transistor (adt)
amrein
attention identifier character
b.t-h.
belt weigher
bertran
boot camps
booty call
career intervention
catch-and-shoot
Chahārcheshmeh
chitonitis
Cinepak
coal tar
cross viscosity
culture fair test
data port
downshot firing
electrically controlled brake
firmest
freshwater environment
Geranyltranstransferase
gobby
GPM (general purpose macrogenerator)
gyrator
Hermies
historical interest
hose angle valve
internal lap
Kalalé
latirus noumeensis
lead too far afield
letter security
likker
limiting size
luo bu hemp chong ji
malacoderms
malfolding
malveuille
mayden
measurement space
measurement while drilling
median constriction
Mohall
mosquito-like
N-ethylpyrrole
negative arc
non-interlace raster scanning
non-parity memory
nonexperimental data model
osmotic balance
Ossian, Loch
over-egging
oxoamide
oxygen-rich
paper negatives
paper roll machine
peeriest
permanent white
phytohemagglutinin,PHA
placing guidelines
playwork
plus sight
ponomarev
property asset
Qal'eh-ye Now
rebbecca
regulated voltage
rightabout-turn
Rock-Eval pyrolysis
SADS-C
screwed(-type) joint
self-dual function
serial processings
serous pulpitis
Shaeffer's spore staining
shaft of fibula
short floating point number format
sirikit
soot dust
T-head cylinder
talk about a picture
tannometer barkometer
thiocyanic
tinkling
training planning information document
Tweed, River
unlicked
vacuum treated
variable-area recording
vector current
viceroyal
vollier
well house
windhorst
Yeina I.