动水压力

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(133) / 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(257) / 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(105) / 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(138) / 评论(0) 分类 自然百科2016年

Cake Mixes And High Altitude Directions Look on the side of a cake mix box and you might find special directions for baking the cake at high altitudes. Why do bakers gave to adjust their cake ingredients when they live at higher elevations? Because a

发表于:2018-12-27 / 阅读(93) / 评论(0) 分类 英语时差8,16

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(118) / 评论(0) 分类 探索与发现2014年

SCIENCE IN THE NEWS - Severe Ocean Storms: Behind Nature's Power By Caty Weaver Broadcast: Tuesday, September 27, 2005 (MUSIC) VOICE ONE: This is SCIENCE IN THE NEWS, in VOA Special English. I'm Bob D

发表于:2019-01-02 / 阅读(102) / 评论(0) 分类 科技之光

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(123) / 评论(0) 分类 英语小短文

AGRICULTURE REPORT –August 20, 2002: Exploding Meat By George Grow This is the VOA Special English AGRICULTURE REPORT. American scientist Morse Solomon has developed an unusual method to make meat s

发表于:2019-01-11 / 阅读(151) / 评论(0) 分类 农业与发展

U.S. officials say a cap on a damaged oil well in the Gulf of Mexico appears to have a small leak, but they say there are no plans to remove the cap from the well. Engineers are carefully studying the well for any evidence of problems. Engineers spot

发表于:2019-01-13 / 阅读(122) / 评论(0) 分类 VOA标准英语2010年(七)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(119) / 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(127) / 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(116) / 评论(0) 分类 《海底两万里》中英双语有声读物

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(182) / 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(110) / 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(104) / 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(127) / 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(110) / 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(116) / 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(190) / 评论(0) 分类 《海底两万里》中英双语有声读物
学英语单词
a bad workman always blames his tools
active communication satellite
Allium longistylum
allogynogenesis
anal furrow
anti-plane shear crack
best-by date
biologic test
bleached fat
break load
calamaries
calamosaur
Candida guilliermondii
cathode-ray osclalograph
center plate rudder
chris-craft
cognitive busyness
common shelduck
complaint and claim
cooling waters
core store cycle time
cumthirsty
delay-loaded
drudgery-ridden
eleutherius
engine stabilizer spring
enshrined
fine mesh grid
finnzyme
free-radical generator
go for the glove
job sequencing module
kcoh
kick-down switch plunger
konoyes
leg-puller
Lemaitre universe
light with
loop interface module
marginal stability
Melmore
modern social linguistics
most likelihood estimate
mutual inductance coupling
necrotises
negligible module
Nevis Pk.
New Leipzig
new wine in old bottle
nylon insulating tape
Okefenokee Swamp
one percenter
ophthalmologists
optic cup fissure
over-exposure region
Panic Duties
patent offices
pendulum test
Pennatae
percutaneous pacemaker
phymatotrichum omnivorum(shear)dugger
phytocoenosium type
plant efficiency
poetic justice
pollinations
productive service
ptyalisms
radar hail detector
railroad apartment
receptional
redstem storksbill
reggae
regular motor oil
residual pressure
Rifapicin
safe vault
separation of particle mixture
sheeting board
shock response
smicker
space radio astronomy
spikiest
stare-out
stewardly
studentish
sutura circumflexa
São Bartolomeu, R.
talk the kind leg off a dog
talkin'
taxman
teratical
tetanies
thaw-exudate
thonself
tinclad
topa
translator package
transparent cut
value of fund
velocity azimuth range display
waterproofing plaster coat
yagi-uda loops antennas