un. 直管式水管锅炉

The moon shone down on the lake like a spotlight. It was a warm summer evening, and I found the night sky, with its 1) glistening stars, relaxing to watch. Five of us were sitting on the dock, wishing

发表于:2018-11-28 / 阅读(281) / 评论(0) 分类 疯狂英语2002年

[00:01.00]Module 2 Developing and Developed Countries [00:09.22]Vocabulary and Listening [00:11.93]Activity 3 Check the meaning of these words [00:16.06]Now listen to the conversation and tick the topics you hear. [02:34.36]Activity 4 Listen again ch

发表于:2018-12-04 / 阅读(285) / 评论(0) 分类 外研社新标准高中英语必修(1-4)

V@enook.cn Lesson 17 Bring me some jam. What are you doing,Mom? I'm making some sandwiches. I'll help.I'll cut the bread. OK,Katie. Oh,Katie!What a mess!Give me that knife,please. Bring me some jam,please. Mom!Dan's eating the jam! The jar's almost e

发表于:2018-12-13 / 阅读(197) / 评论(0) 分类 新世纪少儿英语

Thus by heating liquids we cause them to evaporate, or change into vapours or gases; 因此, 可以看出:我们能够通过加热液体使得它们蒸发, 变成水蒸气或气体; and by taking away heat from these gases, or cooling them, we tu

发表于:2018-12-18 / 阅读(129) / 评论(0) 分类 英国学生科学读本

Lesson 88 Condensation 第88课 冷凝 When the water in a kettle boils, it boils first at the bottom. 当水壶中的水沸腾时, 首先开始沸腾的是底部的水。 We cannot see this in a kettle, because the kettle is made of iron. 我们无法

发表于:2018-12-18 / 阅读(168) / 评论(0) 分类 英国学生科学读本

Bottled water companies often brag about the purity of their drinks. Just imagine if they found a water source that's been cut off from the outside world for well over a billion years. Well, scientists have discovered just that, in isolated reservoir

发表于:2018-12-24 / 阅读(123) / 评论(0) 分类 Scientific American(五)月

This is Scientific American's 60-Second Science. I'm Christopher Intagliata. Got a minute? Asbestos increases the risk for certain cancers. The fibers are thought to do so by skewering cells, setting off chemical reactions that lead to inflammation,

发表于:2018-12-24 / 阅读(167) / 评论(0) 分类 Scientific American(九)月

The Norwegian people catch herring in nets, then they salt, smoke, or dry them to make sure they will keep almost forever without spoiling. 挪威人用网打捞鲱鱼,然后,用盐腌制、用烟熏制、或晒干风干,用各种方法保存鲱鱼

发表于:2018-12-28 / 阅读(125) / 评论(0) 分类 美国学生世界地理教材

85 新功效的抗生素在加州诞生 DATE=8-15-01 TITLE=SCIENCE REPORT - Designer Antibiotics BYLINE=Jerilyn Watson (Start at 1'04

发表于:2019-01-02 / 阅读(216) / 评论(0) 分类 科技之光

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Solar cells convert sunlight to electricity. But they don't take advantage of all that solar heat, thereby missing out on the majority of the solar ene

发表于:2019-01-08 / 阅读(210) / 评论(0) 分类 Scientific American(四)月

In an Aesop fable, a thirsty crow wanting to drink from a pitcher must first raise the water level. So he drops pebbles in the container. In real life, the European Jay can perform the same task. But just how smart is it? Researchers challenged jays

发表于:2019-01-08 / 阅读(133) / 评论(0) 分类 Scientific American(八)月

BBC Learning English London Life Friendliness on the tube Yvonne:I'm Yvonne Archer and this is London Life from bbclearningenglish.com. Hello! In today's programme, we're talking about friendliness on London's tubes. Is there any? As you probably kn

发表于:2019-01-16 / 阅读(279) / 评论(0) 分类 伦敦生活

ARI SHAPIRO, HOST: The National Museum of African-American History and Culture here in Washington has many artifacts connected to slavery. For one woman, visiting the museum this week was a literal homecoming. Isabell Meggett Lucas was born and raise

发表于:2019-01-17 / 阅读(122) / 评论(0) 分类 2017年NPR美国国家公共电台4月

The lava, unleashed, transforms the earth. Along its way from comb to sea, it is a force of change, leaving in its wake a course of destruction and creation. The volcano sculpts a surreal moonscape. Huge rocks ferry on the backs of flows, tower over

发表于:2019-01-22 / 阅读(146) / 评论(0) 分类 自然百科2009年

This roof's just getting lower and lower now, which I don't like. All of this part of the ceiling here has just collapsed. It's a bad time for the torch to come apart. If this goes out, I'm in real trouble. I can let you just see -- all of this stuff

发表于:2019-01-23 / 阅读(121) / 评论(0) 分类 探索与发现2012年

DEVELOPMENT REPORT - Need to Dig a Well? Start HereBy Gary Garriott Broadcast: Monday, May 15, 2006 This is Shep O'Neal with the VOA Special English Development Report. There are several low-cost ways

发表于:2019-01-30 / 阅读(151) / 评论(0) 分类 2006年慢速英语(五)月

The more you know about the various heating systems that are available on the market today, the better able you will be to choose the best one for your home. Obviously, your main goal (besides being comfortable), is to have a heating and air conditio

发表于:2019-02-04 / 阅读(177) / 评论(0) 分类 实用英语

There would soon be an explosion; the kettle would be burst open. It is in this way that boiler explosions are often caused. When there is too much steam in a boiler, and it cannot get out, it presses against the sides of the boiler, until at last th

发表于:2019-02-07 / 阅读(191) / 评论(0) 分类 英国学生科学读本

Rolling down the road Going no where Guitar packed in the trunk Somewhere round mile marker 112 Papa started hummin the funk I gotta jones in my bones before we know We were singing this melody Stop the car pulled out the guitar Halfway to New Orlean

发表于:2019-02-11 / 阅读(179) / 评论(0) 分类 The Voice 美国好声音

摆脱特困户Splash cold water on your face无情地往自己脸上泼杯水吧! If a cup of coffee doesn't keep you awake long enough, try splashing cold water on your face, which is always refreshing. 如果一杯咖啡都无法让你清醒足够

发表于:2019-02-23 / 阅读(123) / 评论(0) 分类 英语听力广播—Listening
学英语单词
accounting services
agrisciences
Al Khatam
androsporogenesis
anti-takeover
anti-war movement
artificial anatomy
attitude of joint
automatic coupling device
batzens
befitted
Bucky-Potter diaphragm
buffered input
cascaded drain
catalasometer
chaubuck
clone strain
control synchro transformer
cut-and-paste
cylinder drier
deir qoubil
distinctive characteristics
ditrichum flexicaule (schleich) hamp
doggicam
DTF
efficiency of capital
entocanthion
erudit
Evil Empire
excursion diving
exhaustive estimator
exprobrations
flexible system
foetal surgery
food-poisoning
French bracken
genus bignonias
Hakodate
hard-burnt brick
heterophil(e)
high speed counter
Hobe Sound
horizontal component of cutter position
huya
indignify
insufflators
Irish burgoo
lateral adjustment of rolls
laurigerous
line of rent
line-fishing
list of keyword
long access time
mine disengaging mechanism
monomer transfer coefficient
narda
nonindexable address tag
npo body
o'driscoll
on the first bound
organic acidemia
Orthopristis
phycophyte
plonk
pop stars
preparatory study
priestcraft
procez
product feature
race-relations
reconstructs
remote mounting capability
representation of a matrix
resonant reed relay
Rhizophoraceae
right sailing
river gradient
road oil
Rossas
rough tunnel
rubus malifolius focke
rutacel
screw head bulb
scud-b
shitskin
Skave
snowband glacier
sternothyroideus
storage access channel
sun helmet
symmetry welding
takes part in
tatpurusha
toost
trabecular duct
typikon
Vendal
wind tunnel axis system
withering loft
wolfeye
wood floated
wound contraction