[机] 倒径比

The Moon 月球 We find that the moon is about 239,000 miles (384,551 km) away from the earth, and, to within a few thousand miles, its distance always remains the same. Yet a very little observation

发表于:2018-12-05 / 阅读(191) / 评论(0) 分类 有声英文阅读

The Moon We find that the moon is about 239,000 miles (384,551 km) away from the earth, and, to within a few thousand miles, its distance always remains the same. Yet a very little observation shows that the moon is not standing till. Its distance fr

发表于:2018-12-07 / 阅读(138) / 评论(0) 分类 双语有声阅读

Quarter 25分硬币 A quarter is an American or Canadian coin. quarter是指美国或加拿大的一种硬币。 How much is a quarter? 这种硬币值多少钱呢? A quarter is equal to 25 cents. 它等价于25分。 It is worth one fourth of a do

发表于:2018-12-13 / 阅读(164) / 评论(0) 分类 与美国小学生一起学英文第5册

围绕树木展开的话题.... Dan: Hello and welcome to this weeks 6 Minute English. Im Dan Walker Smith and today, for the second part of our tree climbing programme, Im joined by Kate. OK Kate, well last week we were talking about tree climbing,

发表于:2018-12-27 / 阅读(159) / 评论(0) 分类 一起听英语

Pre-Listening Vocabulary pi (): the circumference of a circle divided by its diameter ratio: the relationship between two amounts circumference: the distance around an edge of a circular shape diameter: the line across the centre of a circle coincide

发表于:2018-12-28 / 阅读(152) / 评论(0) 分类 趣谈英语

图片 by Jason Marshall Some math is functional. Some math is fun. And some math is simply stunning. If that last description sounds improbable to you, then today just might change your mind. Because now that weve covered enough ground, were going t

发表于:2019-01-02 / 阅读(305) / 评论(0) 分类 数学英语

图片1 图片2 by Jason Marshall Despite many peoples assumption to the contrary, math is undeniably artistic. It takes a tremendous amount of creative muscle and artistry to devise mathematical solutions. And, as made evident by their frequent batt

发表于:2019-01-02 / 阅读(334) / 评论(0) 分类 数学英语

Hi, I'm Carl Azuz. Welcome to this Columbus Day edition of CNN Student News! We'll be talking more about Columbus Day in just a couple minutes. But first, we're reporting on a breakthrough in Chile. And we mean that literally. A hole big enough to re

发表于:2019-01-08 / 阅读(182) / 评论(0) 分类 CNN2010年(十)月

Diameter 直径 A diameter is a straight line inside a circle. 直径是圆内的直线。 Can any straight line in a circle be a diameter? 圆内的任何直线都是直径吗? No, its two ends must meet at two different points on the circle. 不是

发表于:2019-01-10 / 阅读(162) / 评论(0) 分类 与美国小学生一起学英文第9册

Sand 沙子 If you look around you, you can find sand very easily. 你若环顾四周,就很容易发现沙子。 Sand comes from rocks. 沙子源自岩石。 Each grain of sand is less than 2 millimeters in diameter. 每粒沙子的直径小于两毫

发表于:2019-01-10 / 阅读(184) / 评论(0) 分类 与美国小学生一起学英文第5册

In the storeroom 在库房 A:Where can I find a spare hose for the pump? A:我在哪里可以找到一跟备用的机泵软管? B:What size do you need? B:你需要什么型号的? A: 25 mm diameter. A:直径25毫米的。 B:They're at the back o

发表于:2019-01-14 / 阅读(181) / 评论(0) 分类 职业技术英语口语

A: I am looking for a pan. B: No problem. What size would you like? A: A big one would be nice. B: How about this one? It's our biggest16 in diameter. A: Oh, yes. I like that one. But it's too heavy. B: Okay, try this one. It's made of aluminum. A: O

发表于:2019-01-20 / 阅读(224) / 评论(0) 分类 购物英语对话

A: I am looking for a pan. B: No problem. What size would you like? A: A big one would be nice. B: How about this one? It's our biggest16 in diameter. A:I like that one, but it's too heavy. B: Okay, try this one. It's made of aluminum. A: This is muc

发表于:2019-01-21 / 阅读(211) / 评论(0) 分类 购物-Shopping

BEIJING, May 13 (Xinhuanet) - China's central bank announced on Saturday it would lower the reserve requirement for commercial lenders by 50 basis points, the second time it has taken such action this year to inject more market liquidity and shore up

发表于:2019-02-04 / 阅读(245) / 评论(0) 分类 英语新闻

Tree climbing: Part 2 NB: This is not an accurate word-for-word transcript Dan: Hello and welcome to this weeks 6 Minute English. Im Dan Walker Smith and today, for the second part of our tree climbing programme(节目,计划), Im joined by Kate.

发表于:2019-02-05 / 阅读(199) / 评论(0) 分类 六分钟英语

accredited journalist n.特派记者 advertisement n.广告 advance n.预发消息;预写消息 affair n.桃色新闻;绯闻 anecdote n.趣闻轶事 assignment n.采写任务 attribution n.消息出处;消息来源 back alley news n.小道消息 back

发表于:2019-02-06 / 阅读(146) / 评论(0) 分类 实用英语

China's sex ratio is quite worrying nowadays. According to census data, China's sex ratio at birth was 108 males to every 100 females in the early 1980s, only slightly above the natural rate of 103 to 107. In 2000 the ratio was 116.9 males to 100 fem

发表于:2019-02-14 / 阅读(212) / 评论(0) 分类 英闻天下

Bad weather meant that oil could not be pumped out of the ship the Rena today. The waves were too high. Pumping the oil is slow work because the oil is cold and thick. The pipe from the Rena to the oil barge is nearly 200m long and quite narrow, 7.5c

发表于:2019-02-17 / 阅读(146) / 评论(0) 分类 新西兰英语

新闻的种类很多,按分类标准的不同,有各种不同的分类方法。如按照事件的性质分类,新闻可分为硬新闻(hard news)和软新闻(soft news)两大类,硬新闻也就是纯新闻消息报道,指题材严肃

发表于:2019-02-18 / 阅读(248) / 评论(0) 分类 实用英语

Apart from much else, our lively interior created the outgassing that helped to build an atmosphere 不说别的,我们活跃的内部使大量气体喷涌而出,帮助建立了大气层, and provided us with the magnetic field that shields us

发表于:2019-02-25 / 阅读(138) / 评论(0) 分类 万物简史
学英语单词
air pressure test of boiler
alleviative
Arnebia
back sight angle
bog spruce
booklouses
bottom pouring stopper ladle
branchial nerves
Brittish
bulk dilatation
burning house
canine papilloma virus
canna glauca l.
cape crawford
Cashiira
catarrhous
chromatium okenii
chutspah
cif cleared
completive cargo
cone snail
correspond to
dance to someone's piping
decay period
dienones
dose equivalent
double lip countersink bit
dowlands
earth interior physics
eidetikers
etherialized
exoticnesses
fampools
flexure(monocline)
free-entry
game ports
glass stone
glut with
goniastrea australensis
Heinrich Von Melk
heterogenists
hot-dip tinning stack
individual monitoring
inertial frequency
irrigation period
isologous series
Jesuit drama
Kraszna(Crasna)
Leptaleum filifolium
Leydig-cell tumor
liquidity index
Lysiloma bahamensis
malignin
mepomorph
military trade market
minor suit
miraculist
multifrequeney code signalling
nobilich
nonvolatile semiconductor memory
nucleon instruments
of the same batch
oxbow lake
oxidation-reduction reaction in seawater
oxy-accetylene hose
paper making canvas
Para-dichlorobenzol
parastochastic function
pavlovic
peachies
peak performance
Pilea howelliana
Plai Mat, Lam
postsale
pseudomalaria
Rauber's cell
renolin
ride on a pony
salpingopalatine fold
Secamone lanceolata
self-winder
service games
simulation model library
spectrum analysis
start pump
submerged arc heating
systems design
tap us
thiiranes
three-pronged program
traveling jib crane
trepak
Tupistra fungilliformis
undecisive
undishevelled
unjustified benefit
utility-baseds
versifiable
welsh ponies
wheel barrow race
whitish locus
winding click spring