等马赫数

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(126) / 评论(0) 分类 英语沙龙2004全年合辑下

Numbers: Everyone's language [00:08.70]How many languages do you know? [00:13.45]Everyone knows at least two his or her own language [00:22.52]and the international language of numbers. [00:28.45]Ancient numbers [00:32.21]In ancient times, [00:36.15]

发表于:2018-12-17 / 阅读(221) / 评论(0) 分类 北京仁爱英语八年级下

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(95) / 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(114) / 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(162) / 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(179) / 评论(0) 分类 晨读英语美文60篇

By Meredith Buel Washington 28 February 2008 The United States is urging the moderate political parties in Pakistan that made significant gains in recent parliamentary elections to work together to form a coalition government. VOA correspondent Mered

发表于:2019-01-03 / 阅读(159) / 评论(0) 分类 VOA常速英语2008年(二月)

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(148) / 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(138) / 评论(0) 分类 2014年VOA慢速英语(十一)月

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(126) / 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(158) / 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(137) / 评论(0) 分类 实用英语

By Jessica Berman Washington 04 January 2007 There is more evidence that moderate alcohol consumption may be beneficial. An international team of scientists has found that men with high blood pressure can safely drink one or two glasses of wine per

发表于:2019-01-21 / 阅读(191) / 评论(0) 分类 2007年VOA标准英语(一月)

A Just stop and think how important numbers are to our lives. Numbers control us. In fact, we are numbers. We have passport numbers, social security numbers, ID numbers, and more. We live in a house and a street that has a number. We communicate with

发表于:2019-01-21 / 阅读(146) / 评论(0) 分类 纯正英语一分钟

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(202) / 评论(0) 分类 飞行员英语900句

今天我们要学的词是moderate。 Moderate, 适度。酗酒有害健康显然无可非议。英国一项研究显示, Even moderate drinking raises the risks for breast, liver and other cancers for middle-aged women, 即便是适量饮酒也会让

发表于:2019-01-31 / 阅读(138) / 评论(0) 分类 英语单词荟萃

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(129) / 评论(0) 分类 自然百科2012年

BEIJING, Sept. 8 (Xinhuanet) -- Middle-aged white women drinking alcohol moderately are more likely to stay healthy than nondrinkers, according to a new study from Harvard. The study has followed about 14,000 mostly white women since 1976. As a resul

发表于:2019-02-07 / 阅读(136) / 评论(0) 分类 英语新闻

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(248) / 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(145) / 评论(0) 分类 万物简史
学英语单词
a near thing
abrina lunella
angry back syndrome(the excited skin)
antenna tilt error
apatzingan
Azoarcus
bacterialmyocarditis
ball-bearing butt hinge
Ballyclare
Ber.
bisignal zone
bundle wire carrier communication
cabar (chabar)
calligraffiti
city water
clomst
combination angle depth gauge
common lever
constnat speed drive
contract offers
Coulounieix
cutting teeth of dredge bucket
CWPS
delayed reflex
dramaturge, dramaturgist
ductors
elemental standard data
experimental alloy
eyeglass wearers
Federal Reserve Systems
femur fracture
fragile material
fur beetles
geohygiene
get upsides with sb
give away to
gobbell
grandiflora
gryllotalpa dentista
Hibuson I.
in glory
Indigofera litoralis
intricata
jack rabbit
jewel cave national monument
king edward vii ld.
knotbreaker
limbs pain
load shedding according to frequency
maculature
maegan
mantle fibre
Marxian School
metaphorized
microcirculatory
microfab
modafinil
multi-purpose rice milling machine
no-hassler
non-deterministic computation
palatal indices
paratenons
presentation graphic
rachiglossate radula
ralph something up
randomized storage
red marrows
relative detection limit
relevant factors
renal dwarfism syndrome
resting-place
Rotterdammers
rouladed
scaphidema formosanum
septaria
set tongues wagging
shore-front-trials
short-stroke
single rod lattice
spoken communication
statutory proclamation
subcrustal gliding
superbeings
supersuppressor
tawni
tengizchevroil
tens dial
Tetralophodon
total cell count
tree seed
triangular scraper
turn the tables on
ultraviolet densitometer
unlabeled basic statement
unrustable
unselfish
V.S.O.P.
Vu Quang
waterpolo
whigship
wing drag
zevs