饱和含水量

路易斯安那遭遇历史性洪水 已致11人死亡 play pause stop mute unmute max volume 00:0002:14repeat repeat off Update Required To play the media you will need to either update your browser to a recent version or update your Flash plugin. O

发表于:2018-12-02 / 阅读(113) / 评论(0) 分类 CNN美国有线新闻2016年8月

The U.S. state of California has been suffering a historic drought. Three years ago, its governor declared a drought state of emergency. Late last year, 97 percent of California was in drought. But today, the U.S. drought monitor says less than 60 pe

发表于:2018-12-02 / 阅读(79) / 评论(0) 分类 CNN美国有线新闻2017年1月

The northeast just had its first big snow of the season. Meanwhile, on Titan, it was foggy. That weather report brought to you by researchers publishing in the journal Astrophysical Journal Letters. The scientists found that Titan, Saturns largest mo

发表于:2018-12-02 / 阅读(95) / 评论(0) 分类 Scientific American(十二)月

Unit 13 The Culture Content of Vocabulary One of the earliest word sets that a student will learn is colors. Later on the intermediate student learns that in English yellow signifies cowardice and green signifies inexperience and jealousy. It is impo

发表于:2018-12-04 / 阅读(78) / 评论(0) 分类 英语流行话题阅读:语境识词4500

Agriculture Report - Getting to the Root of How to Water Trees This is the VOA Special English Agriculture Report. Some trees can survive a long time without water. Think of trees that grow in the desert. But other trees may need more moisture than t

发表于:2018-12-07 / 阅读(134) / 评论(0) 分类 2011年VOA慢速英语(八)月

Floods Challenge Midwest Farmers On his land outside Peoria, Darrel Kammeyer is keeping one eye on the rising Illinois River and another on the only thing standing between it and his farmland, a seven-meter-tall levee. It was constructed to hold back

发表于:2018-12-16 / 阅读(66) / 评论(0) 分类 VOA标准英语2013年(四月)

Welcome to This I Believe, an NPR series presenting the personal philosophies of remarkable men and women from all walks of life. For our series This I Believe, we receive thousands of essays from young people. Today we hear from one of them. Kamaal

发表于:2018-12-19 / 阅读(126) / 评论(0) 分类 2007年NPR美国国家公共电台

台湾籍旅美老师今天交给我们的句子是: I have a dream,that my four little children will one day live in a nation where they will not be judged by the color of their skin but by the content of their character. 我有一个梦想,那就

发表于:2018-12-25 / 阅读(90) / 评论(0) 分类 留美老师带你每日说英文

Fog Found on Saturn's Moon Titan A study in Astrophysical Journal Letters reveals that Titan may be home to the familiar atmospheric condition known as fog--but made out of methane. Karen Hopkin reports The northeast just had its first big snow of th

发表于:2019-01-02 / 阅读(91) / 评论(0) 分类 60秒科学

Facebook published detailed guidelines Tuesday for what users can and cannot post on the social media service. Earlier this month, lawmakers called on Facebook chief Mark Zuckerberg to appear in Congress. They demanded that his company take more step

发表于:2019-01-03 / 阅读(106) / 评论(0) 分类 2018年VOA慢速英语(四)月

[00:00.00]absence achieve act [00:03.24]n.缺席,不在 vt.完成;达到 n.法令;条例;行为 [00:06.48]advance advanced affair again and again [00:11.19]vt.vi.推进;促进 adj.先进的;高级的 n.事情;事 反复地;再三地 [

发表于:2019-01-10 / 阅读(235) / 评论(0) 分类 高中英语词汇

Will There be Enough Water for Everyone? As the global population grows, so does the need for water. The Worldwatch Institute says increased demands for food, energy and industry, along with climate change, could lead to water scarcity in some places

发表于:2019-01-14 / 阅读(76) / 评论(0) 分类 VOA标准英语2013年(三月)

解决非洲水和燃料的办法 Governments of developing countries in Africa often lack the resources and infrastructure to solve the everyday problems of their inhabitants. But every so often, authorities and local entrepreneurs find low-tech sol

发表于:2019-01-14 / 阅读(81) / 评论(0) 分类 VOA标准英语2015年(十二月)

Low-tech Solutions Found for Africa's Everyday Problems 低技术含量的解决方案解决非洲日常问题 Governments of developing countries in Africa often lack the resources and infrastructure to solve the everyday problems of their inhabitan

发表于:2019-01-14 / 阅读(78) / 评论(0) 分类 VOA标准英语2015年(七月)

RACHEL MARTIN, HOST: It used to be the only place to find great television was on the big broadcast networks, then cable was where all the best stuff was airing. More recently, Netflix and Amazon have been racking up the Emmys. And now Apple wants a

发表于:2019-01-16 / 阅读(93) / 评论(0) 分类 2017年NPR美国国家公共电台1月

综合性商港comprehensive commercial seaport春意盎然spring is very much in the air forest coverage森林覆盖率 global warming全球变暖 principal element主要因素 toxic emission废气排放www.examw.com 迸发出心灵的火花ignite t

发表于:2019-01-17 / 阅读(94) / 评论(0) 分类 英语口译

This is Scientific Americans 60-Second Science. I am Synthia Graber. Got a minute? Wander where and when the next major river flood would had, just look up to the satellites. Conventional estimates a river volumes come from rain fall of course and fr

发表于:2019-01-20 / 阅读(80) / 评论(0) 分类 2014年Scientific American(七)月

Two-week conference aims to achieve legally binding agreement to cut greenhouse gas emissions and has been billed as last best chance to clinch a deal. Sonja Pace | London 04 December 2009 Smoke is seen emitted from a chimney of the cooling towers of

发表于:2019-02-05 / 阅读(83) / 评论(0) 分类 VOA标准英语2009年(十二月)

US satellite observations have produced the first strong evidence for water flowing on Mars. 美国卫星观测找到了火星表面存在液态水的首批强有力证据。 The water is a brine saturated in salts such as perchlorates. As it seeps d

发表于:2019-02-11 / 阅读(69) / 评论(0) 分类 英语新闻

Frost-free Freeze Physics 昇華是指一种物质从固态不经过液态直接转化为气态的过程,是物质在温度和气压低于三相点的时候发生的一种物态变化。与昇華相反的过程称做凝華,指物质从气态直接变

发表于:2019-02-18 / 阅读(69) / 评论(0) 分类 英语听力文摘 English Digest
学英语单词
accelerator pedal rod
Acree-Rosenheim reagent
aglet
albedo-neutron dosemeter
allanbridge
appearaunce
back furrow
basis brasses
bougainvilles
bovine viral diarrhea-mucosal disease
broken octave
calcium manganese silicon
canvas the votes cast
chlorostyrene
commissioner of emigration
conovitz
cross seat
Cynoscephalae
decay tables
Delphinium tianshanicum
Densborn
dialkyls
drost
ebb out
fine metal mesh
foamed filament
Franklin equation
freke
frenugreek
goal-conditions
gradi
halomorphic
hexadecylic acid
hexastichon
holddown plate
hydroscopical
international train
Jabaga
Jersey elm
joy-powder
kitchen maid
kmh
Kokemäki
Kriss Kringle
local retailers
lotus white chicken slice
Maecenas, Gaius Cilnius
mal vu
mental work
metacommand
microemulsified
midaugust
misai
Missourl river
movie rating
multivariate cauchy density
mutual boundary
national water resources
not know that
Nungba
over-nigh
overtime duties
ozone producing radiation
paramagnetic Zeeman effect
parameter oscillation
phosphoric manure
plate facing
polygonum cuspidatum s.et z.
potassium bromides
potential fraction of internal energy
radio-frequency check receiver
rauwolscane
Ray County
rig move
sabirs
salt patenting
sample sum
SBSS
scan-control voltage
space electricity
statutory assignment
steroisomeric
stylocoeniella guentheri
surge counter type sc12
take stoush
tickler coil
tropospheric layer
underground main earthed electrode
unordinary
urban tunnel
venesetic
vestigital
VHS player
virgin gold
Vogel, C.
wandering pacemaker
welsley
Williams syndrome
wilpf
wing tip radius
wound yarn
xiaoming