被动式声纳侦测

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发表于:2018-11-27 / 阅读(400) / 评论(0) 分类 背诵为王第二册

The Supreme Court says it is going to review a lower court ruling protecting marine mammals from Navy sonar. NPRs Martin Kaste has more. For years, environmental groups have argued that the Navys high-intensity, submarine-tracking sonar can disorien

发表于:2018-12-02 / 阅读(235) / 评论(0) 分类 2008年NPR美国国家公共电台六月

[01:36.60]【铁 达 尼 号】 [02:18.36](Sonar Pings) [02:21.60]Man: 13 meters. You should see it. 距离13公尺,应该看得见了 [02:33.84](Sonar Pings) [02:38.52]Okay, take her up and over the bow rail. 越过船头的栏杆 [02:39.20](Over

发表于:2018-12-07 / 阅读(176) / 评论(0) 分类 听电影学英语—泰坦尼克号

Today's topic is active voice versus passive voice. Here's Brian from Iowa: It drives me crazy when people write in passive voice. How can I teach people how to tell the difference between passive and active voice and stay away from passive voice? Th

发表于:2018-12-07 / 阅读(182) / 评论(0) 分类 英语语法 Grammar Girl

身体健康常用词汇 regular check-up / health checks定期体检 die from / of (cancer)死于癌症 make it to the end of your natural term有幸自然死亡 take risks冒险 earlier detection and treatment更早的诊断和治疗 place strain o

发表于:2018-12-08 / 阅读(187) / 评论(0) 分类 四六级词汇与结构练习

by Mignon Fogarty Today's topic is active voice versus passive voice. The podcast edition of this article was sponsored by GoToMeeting. With this meeting service, you can hold your meetings over the Internet and give presentations, product demos and

发表于:2018-12-15 / 阅读(183) / 评论(0) 分类 英语语法 Grammar Girl

Marine Biologists and volunteers in Key Largo are working to save the survivors of a group of dolphins that beached themselves last week in the Florida Keys. Invesigators are trying to determine if sonar from a nuclear-powered submarine played a role

发表于:2018-12-17 / 阅读(291) / 评论(0) 分类 2009年NPR美国国家公共电台7月

It really is rocket scienceresearchers are using huge x-ray scanners from NASA to understand how sonar might be affecting the hearing of large ocean mammals. These scanners are usually used to inspect the space shuttles solid fuel rockets. Navy sonar

发表于:2018-12-24 / 阅读(181) / 评论(0) 分类 Scientific American(十一)月

And they have the blemish both front and rear from a facet where the opposite tooth interlocked with it. 在牙齿前后的齿面都有缺陷就是与对面牙齿相交错的地方。 What happens is that the root is anchored well into the lower jaw.

发表于:2018-12-28 / 阅读(141) / 评论(0) 分类 侏罗纪搏击俱乐部

The sperm whale hits him dead in the centre of his body throwing the Megalodon's enormous weight in a tumble motion under the ocean. 抹香鲸结结实实地撞中它的身体中间,把巨齿鲨庞大的身躯撞得在海洋中翻滚。 The Megalod

发表于:2018-12-28 / 阅读(135) / 评论(0) 分类 侏罗纪搏击俱乐部

ENVIRONMENT REPORT - November 22, 2002: Compromise on U.S. Navy Sonar By Cynthia Kirk This is the VOA Special English ENVIRONMENT REPORT. The United States Navy has agreed to temporarily limit testing

发表于:2019-01-02 / 阅读(199) / 评论(0) 分类 健康与环境

ENVIRONMENT REPORT – August 2, 2002: Navy Sonar and Ocean Animals By Caty Weaver This is the VOA Special English Environment Report. American officials have approved a plan for the United States Nav

发表于:2019-01-07 / 阅读(172) / 评论(0) 分类 健康与环境

AS IT IS 2014-07-13 Move over World Cup, Time for RoboCup 世界杯后开始机器人杯 The end of the World Cup does not mean the end of international competition in Brazil this year. A major football event will happen in the South American country

发表于:2019-01-12 / 阅读(182) / 评论(0) 分类 2014年VOA慢速英语(七)月

From Shakespeares Pen to Our Mouths 从莎士比亚的笔到我们的嘴 Now, time for Words and Their Stories from VOA Learning English. William Shakespeare is probably the most famous English-language writer ever. Historians think Shakespeare was b

发表于:2019-01-12 / 阅读(176) / 评论(0) 分类 2016年VOA慢速英语(五)月

NASA Scanner Offers Clues To Whale Hearing Researchers at UC San Diego and San Diego State University have imaged whale skulls in an attempt to determine the effects of sonar on whale hearing. Cynthia Graber reports It really is rocket scienceresearc

发表于:2019-01-30 / 阅读(306) / 评论(0) 分类 60秒科学

By Paul Sisco Washington, DC 17 October 2007 Medical imaging and improved computer technology are significantly making the detection of heart disease easier, safer and better. VOA's Paul Sisco reports. Dr. James Earls is the medical director at Fairf

发表于:2019-01-31 / 阅读(179) / 评论(0) 分类 2007年VOA常速英语(十月)

Creating Your Dream Lifestyle With Passive Income Every person has a dream of how they would live their life if he did not have to spend a large amount of his time working. Most people rely on earned income to support their finances. This makes a dre

发表于:2019-02-04 / 阅读(187) / 评论(0) 分类 阅读空间

Debris from the Rena has reached beaches in the Coromandel. There are bags of milk powder, plastic and rope on the beaches and broken containers. The sea around the Rena is white from broken bags of milk powder. There is also oil for about 3km around

发表于:2019-02-17 / 阅读(177) / 评论(0) 分类 新西兰英语

With a variety of bands, and price tags ranging all the way from $349 $17,000, theres an Apple Watch for everyone. Except, possibly, the heavily tattooed. 面向大众推出的Apple Watch,款式多样,价格从349美元到17000美元不等。现在

发表于:2019-02-17 / 阅读(216) / 评论(0) 分类 阅读空间

PERTH, Australia/KUALA LUMPUR, April 6 (Xinhua) -- Chinese and Australian ships have picked up acoustic signals while searching for missing Malaysia Airlines Flight MH370 in the southern Indian Ocean. The underwater detection represents an important

发表于:2019-02-18 / 阅读(378) / 评论(0) 分类 英语新闻
学英语单词
3-naphthol-2-carboxylic acid
a Mary
Abae
alginidine
angle aplice
anilin
aporetically
appointed aerodrome weather report
audible.com
bipolar slice IC processor
brevissimus oculi
budged up
bulk-head
by-pass cylinder
caans
calochlora
cell coat
chehalis
climacteric melancholia
companie bagouet
concrete pressure vessel
corbeling
correction for temperature
cost justification
D. C. T.
dagara
daily fuel supply pump
diazoles
DIPNEUSTOMORPHA
dispersed flow
doll yourself up
double-evaporation boiler
even distributed load
falconries
ferro-nickel alloy
flood-gate
fluoresceins
globulite
glycyrrhizas
God send it may not be so!
have a word with someone
immune bodies
internodal segment
intrahepatic duct
john's
laduree
lalophoniatrician
luber
malestroits
mansuete
maxacalcitol
mckenzie high
meat slicer
media violence
metreurynter
mien
monohybrid cross
Montesquieu
n-dimensional projective space
noise transmitter
non-citable
page numbers
papel
pentahydroxybenzene
penumbral theory
phosphorus complex
picture synchronizing pulse
pinpointing
plicipenna
Print Screen
producing departmental charges account
proscenium opening
Queen Mab
quesne
raising of pool
refractive dispersivity
repechages
rolling bearing identification code
Roscelin
safety pin chain
sample temperature
Sampogna
silver-solder
single-phase double-frequency generator
softener
solid roll
speed setting
spermatocyte
start-up system
steering wheel arm
teste'd
thermosetting resin adhesive
tire inflation
Toshkent(Tashkent)
unloading dock
useful insect
variable admission
visitours
watersheds
weder
yard working
zaffers