花键外径配合

Lesson 8 Should We Diet in Order to Keep Fit? Text How Does It Feel to Lose Weight? Here is a conversation between a heart specialist and a heart patient. Vic: I've been feeling very lonely. I can't e

发表于:2018-11-27 / 阅读(213) / 评论(0) 分类 高级口语教程

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(83) / 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(48) / 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(63) / 评论(0) 分类 与美国小学生一起学英文第5册

You've been working out regularly for quite a while, but you're nowhere near your fitness goals. So now it's time to bring in your ultimate weapon -- your mind. Rather than thinking of fitness as something mysterious that you do with your body, take

发表于:2018-12-18 / 阅读(90) / 评论(0) 分类 白领英语晨读

Lesson 18 How to Keep Fit Text A Ten years ago I used to be very fit. T cycled to work and I got a lot of exercise at the weekends. I used to play tennis a lot and go for long walks. In those days I d

发表于:2018-12-24 / 阅读(270) / 评论(0) 分类 中级口语教程

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(56) / 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(94) / 评论(0) 分类 突破英文词汇

我们上次讲了两个个带有fit这个词的习惯用语fit to be tied和fit and trim。今天还要学几个由fit发展而成的习惯用语。第一个是: fit to a T。这里的T是大写英文字母T。Fit to a T是个相当古老的习惯用语

发表于:2019-01-06 / 阅读(140) / 评论(0) 分类 美国习惯用语

BBC Learning English Weekender Keeping fit Callum:Hello, I'm Callum Robertson and this is Weekender. Today, Friday April 7th is World Health Day. A day promoted by the World Health Organisation to raise awareness of health issues around the world. T

发表于:2019-01-06 / 阅读(134) / 评论(0) 分类 Weekender

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(86) / 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(59) / 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(87) / 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(91) / 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(131) / 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(104) / 评论(0) 分类 购物-Shopping

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(106) / 评论(0) 分类 六分钟英语

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发表于:2019-02-05 / 阅读(229) / 评论(0) 分类 加州语文教材California Treasures G2

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(50) / 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(52) / 评论(0) 分类 万物简史
学英语单词
agreeings
AIOEC
ammphibia
amphocortin
and relationship
antifinance
bikkyr
blackheart cherry
calligraphing
camphine
centralized control network
clean waste
compensating sac
conserved vector current
Cotoneaster affinis
cratch
creamed
cycle of operation
deep-slot induction motor
determinands
dihydroxy-progesterone
dimensional consistency
discosting
electrochemistry at liquid-liquid interface
electron beam transmission efficiency
enterorrhexis
enzyme panniculitis
eurithermophilic
Falkner
floating reticle
frames of reference
fraping
friction socket
fuel-reprocessing plant
future-proofed
gastrodermis
gerbera jamesoniis
grandmothers-in-law
haemoptyses
hand loom
hydroxymethyls
hypersensibilities
ice breaking tanker
inhibited admiralty metal
inhooping
iron base powder
isohion
Itinou Simboula
jet reheat temperature control
keratoconus
key change
Kharijism
Larix principis-rupprechtii
laugh something to scorn
lawn food
legionries
leverrier
low density polyethylene
maddened
mezuzahs
microwave hazard
Natasha
net worth to fixed capital ratio
noiseless coding theorem
non-repudiation service
oligoplitess
Orychophragmus violaceus
Ostwald rule
pallet shipment
palmar metacarpal artery
peak value
pebble armor
petroleum tar
phenomenologists
place of open flame
primo de rivera
program communication block mask
program correctness proof
prolongation of bill
quebecs
representing matrix
root scaler
ruling on
rumohras
satellite transmitters
Setaria glauca
single-copy
skirt counter
stigmatization
stonewall jacksons
structural steel hull
subnatural
suipestifer
sulled
tapises
time varying
TLD (thermoluminescent dosimetry)
V-scart
video session
vps vacuum pipe-still
water cyclone
water-bird