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(119) / 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(140) / 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(133) / 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(162) / 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(190) / 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(157) / 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(195) / 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(135) / 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(140) / 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(181) / 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(122) / 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(126) / 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(146) / 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(120) / 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(157) / 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(104) / 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(147) / 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(170) / 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(204) / 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(282) / 评论(0) 分类 剑桥雅思报考指南
学英语单词
abdul-hadi
aerolitic chemistry
baby hamster kidney cells
band grinding
be deceived in sb
Beth-tappuah
breaker position switch
brelsford
ceiling area lighting
celstrus hypoleuca warb.
chaffoteaux
Cladach
coformulated
collinges
colloid index
comprehensive monitoring system
convertible coupe
creaseproofing
cruding range
data management programming system
decomposition vibration
demand oxygen
exhausters
feature checking
flipped out
frank-marriages
fresh steam
fuel line cock
further design
geospatial intelligence
grillroom
groupness
gruyeres
guiches
half groupoid
hump tower operator
hydrochoeruss
icon activation item
inter
Ipomoea triloba
jalapic
job strain
jovy
k'ang pa ?rh han
Koranic
lemonhead
letter of appointment
letter t
Libmanan
licensers
living computer
magnetic barrier trap
Mary Wollstonecraft
matching of exponents
mei-hua
mel gibsons
Meniere's disease
mixier
multi beam interferometer
nonstick button control
NSDS
o'kelly
p-xylene
parallel financing
partial reaction
Passy
photuria
power loss of pump
pre-defecation
premediaeval
prereqs
protective inoculation
public key infrastructure,PKI
radial-inflow
re-direction
register for goods delivered
register reference instruction
remember
repeddling
resulphurize
river bull insurance
section cutter
setting-up exercise
side vent
spark lag
Sporotrichum beurmanni
sq._km.
staggered tubes
stump it
sulfonamiduria
syndrome of remained toxicity
Tandur
to diss
tourmaline type
TTG
uranometrical survey
water closet (wc)
watermints
wet handling
wrist fracture
written out
Yaghoubian