马赫数(飞行速度除以音速)

90 numbers words numbers amount count hundreds thousands millions dozen couple pair double triple quadruple first second third fourth add plus minus deduct multiply divide roughly approximately equal several phrases third time lucky have sixth sense

发表于:2018-11-27 / 阅读(265) / 评论(0) 分类 情景英语口语100主题

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(140) / 评论(0) 分类 英语沙龙2004全年合辑下

Unit 2 Numbers [00:04.41]Students' book Page 7 [00:08.46]Let's act [00:11.42]Give me a rubber,please.Give me a ruler,please. [00:17.29]Give me a rubber,please.Give me a ruler,please. [00:23.25]Students' book Page 8 [00:27.90]Let's talk [00:31.45]Hi,M

发表于:2018-12-13 / 阅读(250) / 评论(0) 分类 沪教版牛津小学英语一年级

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(235) / 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(115) / 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(133) / 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(182) / 评论(0) 分类 英语沙龙2004全年合辑上

2The Lord said to Moses and Aaron: 2The Israelites are to camp around the Tent of Meeting some distance from it, each man under his standard with the banners of his family. 3On the east, toward the sunrise, the divisions of the camp of Judah are to e

发表于:2018-12-30 / 阅读(155) / 评论(0) 分类 民数记

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(191) / 评论(0) 分类 晨读英语美文60篇

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(161) / 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(159) / 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(138) / 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(175) / 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(159) / 评论(0) 分类 实用英语

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(158) / 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(212) / 评论(0) 分类 飞行员英语900句

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(143) / 评论(0) 分类 自然百科2012年

Part Ⅴ : Writing : Lucky Numbers (30 points) 最近几年,一直流行幸运花、幸运石、幸运数字等说法,即有些东西与人的命运联系在一起,如果掌握住了,就会使自己生活幸福,你对这种现象有何看法?

发表于:2019-02-08 / 阅读(143) / 评论(0) 分类 英语作文

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(261) / 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(165) / 评论(0) 分类 万物简史
学英语单词
aburachan seeds
accepting houses
alveolar hypoventilation
American white birch
angle crane
artificial menopause
Asti
autogamous crop
balancing reactor
batteners
Calescence.
capsula lienis
chromostroboscope
commercially minded
Confirmation of Arbitration Agreement
conical pattern
contempered
Correct-Eye-Scope
cyclic anhydeide
debit clearing
dedendum flank
deep-sea cable
defence construction
derrick head
digit-type volt-ohm-milliammeter
distributed parameter element
doctorate
dollarisation
doxxed
drug susceptibility
duosecant
edds
elevator loader
epimythia
erreur
Escoublac
euonymus hederaceus champ ex benth.
federal islamic republic of the comoross
gastrointestinal peristalsis
gazometer
gear levers
genus delonixes
give sb. the bag
heirie
hemipteroid
hollowed-out work
homometallic
Huang He
incommunicability
independent deactivation
inline letter
IR picture
isopelletierine
issuing organization
Kadapa
landing craft
macrogingivae
macrophyllum
Mansholt
media violence
mould dimension
opinionous
opportunism
ore tanker
PCNU
peridine
perimeterarcs
phaseolus trilobatus schreb.
plathelmintiasis
primary trainer
proton flare
public cemetery
pulpolabial
quantative attribute
quecreek
rancheras
ranina ranina
reference cavity
repeat after
replacement of property
romieu
Saltykovo
starseed
sub ballast
submit a petition
teg wool
temporary signal
terracing grader
thread fasteners
transit bus
transmission type meter
triplophos hemingi
twinwoods
under threat
unit drawing
urocanates
virtual private wire service
walter map
welded tee
welsby
woodcraft
woodful