[水利] 外水压力

Conditions on Mars were so harsh that it was hard to imagine any life surviving there. The idea of sophisticated aliens was wiped out. We know that conditions on Mars today are not very good for life.

发表于:2018-12-07 / 阅读(142) / 评论(0) 分类 火星生命

Atmospheric pressure can support a column of water up to 10 meters high. But plants can move water much higher; the sequoia tree can pump water to its very top more than 100 meters above the ground. U

发表于:2018-12-15 / 阅读(274) / 评论(0) 分类 新东方背诵文选

BARBARA KLEIN: This is SCIENCE IN THE NEWS, in VOA Special English. Im Barbara Klein. BOB DOUGHTY: And Im Bob Doughty. Today we remember Hurricane Katrina and tell about the science of severe ocean storms. (MUSIC) BARBARA KLEIN: Many Americans are ob

发表于:2018-12-15 / 阅读(117) / 评论(0) 分类 2010年VOA慢速英语(八)月

旱灾的成因与影响 Its signs are subtle and slow: the earth dries; water levels fall; the rains do not come; and the land is gripped by drought. At its most basic, a drought occurs when more water is used than isreplenished. It is a balance bet

发表于:2018-12-26 / 阅读(150) / 评论(0) 分类 自然百科2016年

The air thins and they begin to lose the protective weight of the miles of air above them. The pressure is dropping, when you finally get to the stratosphere, and to the altitude we like to work at, it's only one one hundredth that of it's on the gro

发表于:2018-12-27 / 阅读(134) / 评论(0) 分类 探索与发现2014年

Cohesion-tension Theory Atmospheric pressure can support a column of water up to 10 meters high. But plants can move water much higher; the sequoia tree can pump water to its very top more than 100 meters above the ground. Until the end of the ninete

发表于:2019-01-08 / 阅读(137) / 评论(0) 分类 英语小短文

LULU GARCIA-NAVARRO, HOST: This summer, we are taking a deeper look at climate change and the profound effect it's having on people around the world. Today, we're going to Chile in South America. NPR's Philip Reeves visited a community whose landscap

发表于:2019-01-16 / 阅读(123) / 评论(0) 分类 2017年NPR美国国家公共电台7月

Kelly Moore and her friends went to the beach. Kelly did not know how to swim. All her friends were having fun in the water. Come in! they kept shouting. Stop being a chicken! she heard them say. Kelly hated being teased. She finally decided to jump

发表于:2019-01-24 / 阅读(147) / 评论(0) 分类 英语第4级听力-English Level 4

Without my noticing it? 我怎么一点都不觉得? Without your noticing it. And if you aren't crushed by so much pressure, it's because the air penetrates the interior of your body with equal pressure. 您一点不觉得。您所以不被这样大

发表于:2019-01-28 / 阅读(143) / 评论(0) 分类 《海底两万里》中英双语有声读物

Note well, my fine Canadian, I went on, if such an animal exists, if it lives deep in the ocean, 请您注意,我又说,我的诚实的加拿大人,如果有这样的一种动物,如果它是生活在海洋底下, if it frequents the liquid

发表于:2019-01-28 / 阅读(131) / 评论(0) 分类 《海底两万里》中英双语有声读物

Todd: Norm, you said that you used to teach computers! Norman: Yes! I did at the elementary school back in Canada. Todd: And what was that like? Like how did you actually teach computers. Norman: Actually, I initiated a computer project. We were plac

发表于:2019-01-30 / 阅读(107) / 评论(0) 分类 英语访谈对话

Todd: Norm, you said that you used to teach computers! Norman: Yes! I did at the elementary school back in Canada. Todd: And what was that like? Like how did you actually teach computers. Norman: Actually, I initiated a computer project. We were plac

发表于:2019-02-06 / 阅读(108) / 评论(0) 分类 原版英语对话1000个

丹麦人的幸福感源于平等;新加坡人的幸福感源于法律;印度加尔各答贫民窟的人的幸福感源于相互依靠彼此的心。 In Denmark, happiness comes from equality; in Singapore,happinesscomes from the rule of law; in the

发表于:2019-02-06 / 阅读(119) / 评论(0) 分类 英语美文

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

【英文原文】 If I were to stop drinking water right now, how long could I live? There are several different factors involved here. A human being isnt an automobile which needs a certain amount of gas. There are conditions under which a person c

发表于:2019-02-16 / 阅读(121) / 评论(0) 分类 英语听力广播—Listening

Cohesion-tension Theory Atmospheric pressure can support a column of water up to 10 meters high. But plants can move water much higher; the sequoia tree can pump water to its very top more than 100 meters above the ground. Until the end of the ninete

发表于:2019-02-17 / 阅读(118) / 评论(0) 分类 双语有声阅读

In 1993, water aerobics was only for senior citizens or patients in rehab. Nowadays, it encompasses a variety of trendy underwater sports, all of which are healthy. The body has 90 percent support when under water. That means the joints only have to

发表于:2019-02-23 / 阅读(137) / 评论(0) 分类 英语时差8,16

Fine, captain, but now we come to a genuine difficulty. You're able to lie flush with the surface of the ocean, that I understand. 对,船长,可是这里有实际的困难。这样,您可以使船面跟洋面一致,我可以理解。 But low

发表于:2019-02-25 / 阅读(120) / 评论(0) 分类 《海底两万里》中英双语有声读物

These algae are a genuine prodigy of creation, one of the wonders of world flora. 这些海藻类实在是造化的奇迹,宇宙植物界的一个奇迹。 This family produces both the biggest and smallest vegetables in the world. 地球上最小和

发表于:2019-02-25 / 阅读(140) / 评论(0) 分类 《海底两万里》中英双语有声读物

These are the normal navigational instruments, I replied, and I'm familiar with their uses. 这些是航海家常用的仪器,我答,我知道它们的用法。我现在看见的这个表盘,上面有能转动的针,那不是流体压力计吗?

发表于:2019-02-25 / 阅读(204) / 评论(0) 分类 《海底两万里》中英双语有声读物
学英语单词
a good laugh
A.B.Ed.
acumination
altius
anti-friction composition
At Tall al Kabir
automatic feed control
automobile improvement
barngun
Bate.
be-Roscius
Belgrano, L.
Canis dingo
Cantharis vesicatoria De Geer.
Cape Cod National Seashore
center for computing and automation
chemistry of rare earths
coupon-based supply
crib groin
cryptaesthesia
deaerator pressure control valve
Dictyotosporites
double-cone rotary vacuum dryer
ducol
dughets
ethylisosulfocyanide
Feldafing
flatology
foliage cutter
fully cavitating propeller
functional properties
gang tool axle lathe
gas cooling system
gnemonoside
half Wellington
hand-transmitted shock
headbender,head-bender
health-code
hemi-clino-prism
high phosphorous iron
house-sales
iliescu
immunosurveillance
impounded water level
inner storage
insertion-excitation-decomposition reaction
kaliliparite
Klerksdorp
line printer command
Liu Yuan
Long Day's Journey into Night
long-term memory (ltm)
menwith
mini-remote control panel
Nanhai Warm Current
neef
nitpick
nontuberculous
observation group
ordinance power of executive
orthopoxvirus cowpox
out of contact with
parachronology
pelycalgia
penal action
pentaphylax euryoides gardn. et champ.
Petigny
Phyllotreta nigripes
polish sth off
puddle balls
radiation catalyst
Ramsay-Shield equation
re-births
reggae fusion
roshi
Saussurea malitiosa
scsrsistsesrsisosns-s
security framework
shaolins
Shavous
side-hung folding door
Sir Thomas Stamford Raffles
small superficial petrosal nerve
smoking gun
snuggle bunny
soil gleying
stephen cranes
super-citizen
synaptic frequency
Templepatrick
threephase slip-ring motor
traitorous action
traumato1ogy
true airspeed calculator
unhospitality
untheatric
upwind taxiing
variable safety level
Veere
vexeth
visible UV laser
wind straighter