声学[声频]声子

When Pablo Panda Sandoval made history with 3 home runs in game one of the world series his head was probably buzzing. But when batters in chilly Detroit had the ball not quite right in the next couple of the nets, it will be their hands that buzzing

发表于:2018-12-24 / 阅读(89) / 评论(0) 分类 Scientific American(十)月

This is Scientific American's 60-second Science. I'm Steve Mirsky. Got a minute? Can you name those notes? Probably not. Perhaps one in ten thousand speakers of European languages has perfect pitch - the ability to recognize a note without having hea

发表于:2018-12-24 / 阅读(89) / 评论(0) 分类 Scientific American(五)月

This is Scientific American's 60-second Science. I'm Karen Hopkin. If you ever got picked on in the schoolyard, you might have wished for some sort of superpower, like unbeatable speed or maybe just the ability to completely disappear. Now scientists

发表于:2018-12-24 / 阅读(90) / 评论(0) 分类 Scientific American(五)月

Scientists analyzed around 2,500 of those calls, and found that the second part (sound) is nearly identical in pitch every time from each whale: 16 hertz, or four octaves below middle C. And the slight variations in frequency that do exist are only a

发表于:2019-01-02 / 阅读(121) / 评论(0) 分类 60秒科学

Hybrid cars are good for the environment. But scientists say that they might be bad for pedestrians. Because hybrids are so quiet, it can be hard for walkers to hear them until its too late. Listen to this. [quiet car sound] Thats a Toyota Prius mov

发表于:2019-01-02 / 阅读(139) / 评论(0) 分类 60秒科学

Can you name those notes? Probably notperhaps one in 10,000 speakers of European languages has perfect pitch, the ability to recognize a note without having heard any reference note first. But theres a much better chance you could successfully name

发表于:2019-01-02 / 阅读(119) / 评论(0) 分类 60秒科学

If you ever got picked on in the schoolyard, you might have wished for some sort of superpower: like unbeatable speed or maybe just the ability to completely disappear. Now scientists at the College of Wooster in Ohio say that you might have had a s

发表于:2019-01-02 / 阅读(137) / 评论(0) 分类 60秒科学

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Every year, scores of manatees are killed by boats in Floridas waters. Their plight is an ecological concern. And everyone from marine biologists to Marg

发表于:2019-01-08 / 阅读(94) / 评论(0) 分类 Scientific American(十一)月

This is Scientific American's 60-second Science. I'm Karen Hopkin. This will just take a minute. Hybrid cars are good for the environment, but scientists say that they might be bad for pedestrians. Because hybrids are so quiet that can be hard for wa

发表于:2019-01-08 / 阅读(98) / 评论(0) 分类 Scientific American(五)月

We humans are pretty good at communicating with sounds other than words. But how much of this is hard-wired, and how much do we pick up from others? To find out, researchers recorded the nonverbal sounds of people born deaf, as they responded to a ra

发表于:2019-01-08 / 阅读(93) / 评论(0) 分类 Scientific American(十一)月

Blue whales off the California coast make calls that, sped up 10 times, sound like (sound of two-part call). The original is a wall-rattling frequency too low for us to hear. Scientists analyzed around 2,500 of those calls, and found that the second

发表于:2019-01-08 / 阅读(77) / 评论(0) 分类 Scientific American(八)月

AS IT IS 2015-08-27 Philippines Looking at 'Ecotourism Zone' in South China Sea 菲律宾试图在南海开辟生态旅游区 The Philippines has launched a campaign to push for an ecotourism zone in the middle of the Spratly Islands in the South Chi

发表于:2019-01-08 / 阅读(79) / 评论(0) 分类 2015年VOA慢速英语(八)月

Country Music Ladies Put Men in Their Place American country music lyrics often describe women as they might appear in mens dreams. This is especially true of songs by many male artists. But the songs by Maddie Marlow and Tae Dye are different. The t

发表于:2019-01-12 / 阅读(100) / 评论(0) 分类 2015年VOA慢速英语(九)月

Boston Symphony Makes Music in Mountains When Serge Koussevitzy, the Russian-born conductor of the Boston Symphony Orchestra, opened Tanglewood in 1937, he chose an all-Beethoven program, including the Pastorale Symphony. When conductor Christoph von

发表于:2019-01-13 / 阅读(79) / 评论(0) 分类 VOA标准英语2012年(七月)

By Alisha Ryu Nairobi 18 November 2009 A U.S.-flagged container ship which was hijacked by Somali pirates seven months ago has been attacked again off the coast of Somalia. Pirates were unsuccessful in their second attempt to hijack the Maersk Alaba

发表于:2019-01-14 / 阅读(111) / 评论(0) 分类 VOA标准英语2009年(十一月)

Want To Address Teachers' Biases? First, Talk About Race AUDIE CORNISH, HOST: Public school data shows that black students are less likely to be labeled gifted than their white classmates and more likely to be suspended. An elementary school teacher

发表于:2019-01-17 / 阅读(59) / 评论(0) 分类 2016年NPR美国国家公共电台8月

The Tiangong-2 space lab, though adopting the structure of Tiangong-1 without too many changes in appearance, has been designed to function much stronger than its predecessor. Zhu Congpeng, chief designer of the lab, says they've focused on a variety

发表于:2019-01-19 / 阅读(97) / 评论(0) 分类 2016CRI中国国际广播电台

通知与确认 Acknowledgments Confirmations 通知对方接到来信Acknowledging receipt of letters1. Dear Mr/Ms,Thank you for your letter No. A-3 of 6th May, offeringus 6 UI-4 Viewdatas. We have passed it on to ourTechnical Department for their c

发表于:2019-02-06 / 阅读(133) / 评论(0) 分类 实用英语

Ganso could be out until 2013, says physio RIO DE JANEIRO, Sept. 28 (Xinhua) -- Brazil midfielder Paulo Henrique Ganso could be forced to wait until next year to make his debut for new club Sao Paulo. Ganso, who joined the Brazilian top division outf

发表于:2019-02-06 / 阅读(151) / 评论(0) 分类 英语新闻

Recording 40 录音40 You will hear a recorded message about a bus tour. 你将听到一段关于巴士环游的录制留言。 First, you have some time to look at the questions 11 to 14. 首先,你有些时间看看第十一题至第十四题。

发表于:2019-03-15 / 阅读(240) / 评论(0) 分类 剑桥雅思报考指南
学英语单词
7th art
acinetic
AGGL
Al-Nassr
alexander selkirks
American Association of University Women
anticipating abnormal condition
ARREP
asbestos cushion
atypical karyokinesis
big government
blue flag
bowenoid actinic keratosis
buccoclusal
campanile
caption signal generator
Cardioverter-Defibrillator
caulastrea echinulata
ccops
cefroxadine
centering axis
ch'ing shang ling
city thoroughfares
clifford odetss
composite layout object
conductoras
cruised
Cryptodiscus
current telephone
Cyclopent
delayed energy
Dendrobium thyrsiflorum
destorying
dialog generator
discipleship
doughnut cooker
electrical industry
experimental circuit
fin of minimum weight
FL (fail lockout)
fuel follower
Funkley
giff-gaff
gilboa
glacial meal
glogging
heavy metal poisoning
Horizon Tablemount
horseshoe conduit
hungerful
include war
iron collar
Jhelum R.
Kit Carson
L'Enfant, Pierre Charles
languistics
Martinopole
melon seed chocolate
message compatibility information
minimaltype
New Democrat
nucor
ointment slab
one time adjudication system
order-size formula
os(e)
Osyris wightiana
OT (oil tight)
output tube
panel packing efficiency
pipe thread ring
pop shop
practicalize
pseudo range
ranulph
rear-mounted installation
removable structure
rhynchosia volubilis lour.
rotor timing gears
roun'
saturation vapo(u)r pressure
scotch cousin
scraping along
septimation
shell-tube heat exchanger
shielded welding
speedometer fuse
sping dogfish
sponsorer
syssarcoses
tenosal
tetrachloro silicane
timber cutter
transparency mode
trap amplifier
two-line mixtures
Vieussens' ventricle
waste scavenging
water-bearing zone
whinies
workstrand