焦斑直径

So we know that the distance must be about eight thousand miles, as twenty-five is a little more than three times eight. 那么我们就知道从世界一面到另一面的距离肯定是大约8000英里,因为25是8的三倍多一点。 That is no

发表于:2018-12-04 / 阅读(187) / 评论(0) 分类 美国学生世界地理教材

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(160) / 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(110) / 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(129) / 评论(0) 分类 与美国小学生一起学英文第5册

一个英语单词可分为三部分:前缀(prefix)词根(root)后缀(suffix)。位于词根前面的部分就是前缀。前缀,可以改变单词的意思。 di- 表示使分开,离开 distinguish = di + sting(刺)+ uish 将刺挑

发表于:2018-12-19 / 阅读(109) / 评论(0) 分类 英语PK台

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(131) / 评论(0) 分类 一起听英语

1. circumference /səˈkʌmfərəns/ -- distance around a circle or rounded body; perimeter The circumference of a circle equals times the diameter. 圆周长等于与直径的乘积。 2. circumlocution /ˌsɜ:kəmləʊˈkju:ʃən/ -- roundabout way

发表于:2018-12-30 / 阅读(158) / 评论(0) 分类 突破英文词汇

发表于:2019-01-07 / 阅读(188) / 评论(0) 分类 Wee Sing Around the World

今天我们要学的词是hot spot。 Hot spot, 热点。 My old neighborhood was a burglary hot spot, 我原来住的那个社区是入室抢劫的多发地带。 The International Cricket Council sees China as one of the future hot spots of the ga

发表于:2019-01-07 / 阅读(151) / 评论(0) 分类 英语每日一词

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(151) / 评论(0) 分类 CNN2010年(十)月

HEALTH REPORT -October 30, 2002: Breast Cancer Operation Studies By Nancy Steinbach This is the VOA Special English Health Report. Two new long-term studies have compared two operations for early brea

发表于:2019-01-09 / 阅读(148) / 评论(0) 分类 健康与环境

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(125) / 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(157) / 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(152) / 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(190) / 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(173) / 评论(0) 分类 购物-Shopping

MADRID, May 9 (Xinhua) -- China's top tennis player Li Na was focused on the job in hand after defeating Angelique Kerber in the last 16 of the Madrid Open tournament on Wednesday. Li's win over the player who had beaten her in Indian Wells earlier i

发表于:2019-02-05 / 阅读(131) / 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(171) / 评论(0) 分类 六分钟英语

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(121) / 评论(0) 分类 新西兰英语

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(105) / 评论(0) 分类 万物简史
学英语单词
Abudefduf
aciculifruticeta
Agricultural Adjustment Administration
arthur tappans
average condition information content
base anchor
bladderworms
box-type gate
Buy To Open
can flanging machine
carcinoma of lung
carl orffs
cerebral tumor
clear sb off sth
cleared up
coelorinchus asteroides
collision frequency
colourbreed
commissioned military officers
cultural community
curtos mundula
desches
desizing agent
diameter occipitomental
digoxin
discocyte
distance beteen commutator segment
dominant negative mutant
double-current system
draken
elbow-length
electromagnetic mass
electronic position calculation device
electroslag welding with consumable nozzle
emulsion (polymerized) rubber
false current
fuckedness
fugacity of B in a gaseous mixture)
gain without pains
gamahuche
gathercole
grammer
greatgrandmother
hightype
in that spirit
indicating-controlling instrument
induction period of volatile rust preventive material
insectological
International Maritime Dangerous Goods Gode
intertrigoes
kushes
La Jolla
Lake Michigan
landed with
Lepironia mucronata
letter of lien
linear dicision rule
loop assertion generating system
luster cloth
mahmals
module-names
moenomycins
Natsvlishvili
non-skid braking system
oleary
over-rife
packer's bay
passed around
persistent erysipelas
pethidines
photoelectri
pinocytosis vesicles
powder metallurgical alloy
Prinsenbeek
prompt book
purple amaranths
put your back into
raise stope
rapid-reaction
respuns
Revlon
rf heating
salt receptor cell
sambucus racemosas
savourers
Shiitisation
soft launching site
sovereign drug
spirometer Hutchinson's
standing pulley
take an objection against
take off one's coat
tall slender column
telemechanical installation
templet cutter
theory of nonlinear oscillation
traffics in
transnationals
Trigonotis giraldii
vaginitises
Vizirnyy