临界阻力马赫数

NASA Successfully Tests Hypersonic 1 Jet Three years after its first test flight ended in an explosion, NASA on March 27 successfully launched an experimental jet that the agency believes reached a re

发表于:2018-12-05 / 阅读(153) / 评论(0) 分类 英语沙龙2004全年合辑下

Confidence,confident F: There are a number of important areas to consider for a branch office. M:we measure stability in government and economy. F: another critical area is business investment. M: You mean how much investment is going on in an area?

发表于:2018-12-16 / 阅读(175) / 评论(0) 分类 VOA 商务英语

That's an unnatural act for a rocket. 这对于火箭来说,不是一种自然的行为。 The third stage has a camera. 第三次发射,火箭上有一个摄像机。 We call it rocketcam. 我们称之为火箭摄像机。 And it's pointed at th

发表于:2018-12-18 / 阅读(126) / 评论(0) 分类 TED演讲科技篇

40 years later, aero experts coined the term transonic. 40年后空气动力学专家创造了跨音速这个术语。 They debated, should it have one S or two? 他们争论这个术语应该用一个S,还是两个S? You see, they were having trou

发表于:2018-12-18 / 阅读(142) / 评论(0) 分类 TED演讲科技篇

Mother Machree There's a spot in my heart which no colleen may own; There's a depth in my soul never sounded or known; There's a place in my memory my life that you fill; No other can take it no one e

发表于:2018-12-30 / 阅读(199) / 评论(0) 分类 英语沙龙2004全年合辑上

Mother Machree 慈母颂 Theres a spot in my heart which no colleen may own; Theres a depth in my soul never sounded or known; 在我心中有那么一隅, 任何少女也不能占据。 它埋在我灵魂的深处, 我从不声张从不表露。

发表于:2019-01-02 / 阅读(208) / 评论(0) 分类 晨读英语美文60篇

今天,Michael 和他的中国同学李华约好了在中央公园见面。他们在对话中会用 到两个词:drag 和 trip。 L: 对不起,Michael,我迟到了。地铁误点了。 M: Hey,

发表于:2019-01-09 / 阅读(208) / 评论(0) 分类 美国之音《流行美语》

Four Young People Who Make the World Better 四个年轻人致力于让世界更美好 What can technology do to make your world better? Four young people are starting new businesses to answer that question. Mateusz Mach Eighteen-year-old Mateusz Mac

发表于:2019-01-12 / 阅读(171) / 评论(0) 分类 2016年VOA慢速英语(三)月

Young Technology Expert Works to Stop Car Thefts Kenya is East Africas largest economy. Its capital Nairobi is growing quickly. But so is the citys crime rate -- the Nairobi Metropolitan Crime Observatory says thieves steal an average of 10 cars each

发表于:2019-01-12 / 阅读(170) / 评论(0) 分类 2014年VOA慢速英语(十一)月

我们前两次已经讲了好几个以fight为关键词的习惯用语。我们今天还要再讲两个。第一个是: knock-down drag-out fight。Knock-down意思是击倒,而drag-out可以解释拖出来。听了这个习惯用语你很可能会联

发表于:2019-01-16 / 阅读(205) / 评论(0) 分类 美国习惯用语

MICHEL MARTIN, HOST: It's no secret that corruption is widespread in Kenya. But recently, the conversation about it got real when a bus driver confronted the police and the president with a story of bribery on national television. NPR's Eyder Peralta

发表于:2019-01-16 / 阅读(149) / 评论(0) 分类 2017年NPR美国国家公共电台2月

STEVE INSKEEP, HOST: The United States Supreme Court is busy this week with a ninth justice, Neil Gorsuch, on the bench. Today, the court hears arguments in a Missouri case with the potential to open state coffers for aid to parochial schools. Like M

发表于:2019-01-17 / 阅读(186) / 评论(0) 分类 2017年NPR美国国家公共电台4月

2010年3月8日是三八妇女节,给自己的母亲或者女性朋友送上一首英语诗歌-《慈母颂》作为祝福,给她们一个意外的惊喜和慰问吧。为大家收集了几首 英语诗歌祝福语,祝福全天下的女性朋友们

发表于:2019-01-20 / 阅读(169) / 评论(0) 分类 实用英语

Expedite climb to FL190. 21.加速上升到高度190。 Climb to FL280 expedite until passing FL180. 22.上升到高度280,快速通过高度180。 Unable to expedite climb due weight. 23.由于重量原因不能加速上升。 Descending immediate

发表于:2019-01-31 / 阅读(229) / 评论(0) 分类 飞行员英语900句

to put on the back burner to drag one's feet 我们经常说做事要看轻重缓急,有的时候不得不把正在做的事或计划要做的事先搁置一边。美国人把这叫做:to put on t

发表于:2019-02-02 / 阅读(232) / 评论(0) 分类 美国习惯用语

Before we take this giant leap, we need to be able to carry everything needed for a three-year -round trip with us. This is a much larger effort than getting to the moon. Its the Apollo mission on steroids. At this point we know at least as much as t

发表于:2019-02-03 / 阅读(151) / 评论(0) 分类 自然百科2012年

今天我们要学的词是drag。 Drag, 做为名词,有累赘,拖累的意思。美国联邦储备委员会主席伯南克认为,房屋市场的不景气会继续成为美国经济成长的绊脚石。Federal Reserve Chairman Ben Bernanke sai

发表于:2019-02-06 / 阅读(160) / 评论(0) 分类 英语每日一词

今天我们要学的词是drag。 Drag, 作为名词,有累赘的意思。 He did not want to be a drag on his children, 他不愿意成为孩子们的负担。 He has always been a drag on the group, 他总是给集体拖后腿。 在美国总统大

发表于:2019-02-06 / 阅读(155) / 评论(0) 分类 英语每日一词

GWEN IFILL: After serving in Iraq and Afghanistan, many veterans face an uphill battle finding work in civilian life. There's been an increase in efforts to help ease their transition, but one segment of the veteran population is often overlooked. Sp

发表于:2019-02-17 / 阅读(273) / 评论(0) 分类 PBS访谈社会系列

At least the names for the two main possible culprits are entertaining: they are said to be either WIMPs (for Weakly Interacting Massive Particles, which is to say specks of invisible matter left over from the Big Bang) or MACHOs (for MAssive Compact

发表于:2019-02-25 / 阅读(181) / 评论(0) 分类 万物简史
学英语单词
-phorous
a-roast
Adelshofen
adrenoreceptor
affords
ambulance chaser
annuary
ariosoma major
associate editor
Atridae
austroclimaciella habutsuella
axial labyrinth gland
B indicator
bargain hunter
bdellium
befurs
Bideford
biovolumes
Cato Island and Bank
central office cable
coarse slime
conditional precedent transaction
corosamin
decumulation
detrital pathway
dibbling
ehrlichemia
elymus tsukushiensis
equivalent uranium capacity
ergotherapy
evenly divisible
feel nervous about
filot cross
fire-suppression bottle
flooded in
genus Pernis
grant sb leave of absence
harry-water
highest attained vacuum
holocellulose
hungry colon
hyperbaric oxygen chamber
Inside Passage
iridoperiphacitis
isotonic contraction
key to column heading
laminated cortex
lauersen
lavauxes
leave your mark
long echo
lovelocks
Mansfeld copper process
Microsoft AX
middle market cross rate
milk period
misapplies
moudon
myringodermatitis
myrrh (a)
narrative form of statement
nation
near monopoly
non-virtual hosting
okermanite (kermanite)
oruc
oxytropis latibracteata jurtz
Payables on equipment
plumbous hyposulfite
preproproteins
program indicator code
pull start
quarter stretch
quota wages system
radiotelegraphic signals
reactor poison skirt
road-network
roderigoes
rub fastness
Sierra Rosada
sir arthur harden
smallnesses
soil contact
spiraling rate
square roots
St George's Channel
standard of classification
standardizing organization
sulprofos
swarthiness
tax on luxuries
tea-staineds
tegestology
transmutation probability
Vitis quinquangularis
wind flume
wire rope conveyer
yang water
your man
zinc magnesium chalcanthite
zorillas
zun