必需无机离子

Life Grows in the Soil of Time by Thomas Mann What I believe, what I value most, is transitoriness. But is not transitoriness - the perishableness of life - something very sad? No! It is the very soul of existence. It imparts value, dignity, interest

发表于:2018-11-30 / 阅读(128) / 评论(0) 分类 英语励志美文精华

Rice had seen the same thing in Iceland, one of the few places on Earth with similarities to Mars. It too is extremely cold, and most of the water is frozen into glaciers. And also like Mars, buried u

发表于:2018-12-07 / 阅读(115) / 评论(0) 分类 火星生命

Billy: So what did you get? Jennifer: It's all in the bag. Billy: What's this? Essential oil? Wow! This stuff is expensive. Jennifer: I need that to relax. I'm going to put a few drops in my bath water. Billy: How is oil supposed to make you relax? J

发表于:2018-12-25 / 阅读(100) / 评论(0) 分类 Eztalk美语会话

本讲为2006年下半年新的教学内容,请对照讲义听声音! Students(researcher/scholar) of Nature are not satisfied with guessing, but they observe, day after day, the changes which tak

发表于:2018-12-30 / 阅读(99) / 评论(0) 分类 自考英语(一)78讲

Teacher: Walter, why don't you wash your face? I can see what you had for breakfast this morning. Walter: What was it? Teacher: Eggs. Walter: Wrong, teacher. That was yesterday. 教师:沃尔特,你为什么不洗脸?我看得出你今天早饭吃了什么。 沃尔特:我吃

发表于:2019-01-02 / 阅读(99) / 评论(0) 分类 英文笑话

Young Technology Expert Works to Stop Car Thefts Kenya is East Africas largest economy. Its capital Nairobi is growing quickly. But so is the citys crime rate -- the Nairobi Metropolitan Crime Observatory says thieves steal an average of 10 cars each

发表于:2019-01-12 / 阅读(80) / 评论(0) 分类 2014年VOA慢速英语(十一)月

AS IT IS 2014-10-21 Climate Change Could Destroy Farms in Africa 气候变化会使非洲农场受重创 A new study says the speed and severity of climate change could cause major damage to small African farms. These farmers are already struggling t

发表于:2019-01-12 / 阅读(107) / 评论(0) 分类 2014年VOA慢速英语(十)月

Tests Show Levels of Arsenic in US Rice Two hundred different types of rice and rice products tested by both the non-profit research group, Consumer Reports, and the U.S. Food and Drug Administration [FDA], contained varying levels of different forms

发表于:2019-01-13 / 阅读(112) / 评论(0) 分类 VOA标准英语2012年(九月)

Sunscreen comes in many forms, each with its own impacts on your body and the environment. 防晒霜有很多种,每种对你的身体和环境影响各有不同。 With so many options, how do you choose which sunscreen is best for you? 有了这么

发表于:2019-01-17 / 阅读(128) / 评论(0) 分类 TED演讲教育篇

Premier Li Keqiang says China should consider science and technology as a primary productive force. Scientific and technological innovation to a large extent determines the future of China's development strategy. In history, we have missed several te

发表于:2019-01-20 / 阅读(96) / 评论(0) 分类 英语新闻

Essential and Optional Things Ella: Its so exciting that youll be spending a month studying in McQuillanland this summer. When do you start packing? Marty: Ive already started. The organizers of the program gave me a list of things I need to bring. E

发表于:2019-01-22 / 阅读(196) / 评论(0) 分类 2012年ESL之日常生活

-Sheldon:Leonard, excellent. I want to show you something. excellent:太好了 Leonard太好了,我想让你看点东西。 -Leonard:Can it wait? I need to talk to you. 能等一会吗,我们得谈谈。 -Sheldon:Just look. I've designed

发表于:2019-01-28 / 阅读(222) / 评论(0) 分类 生活大爆炸第一季

Sprigg submitted a paper to Nature, but it was turned down. 斯普里格给《自然》杂志写了一篇论文,但是没有被采用。 He read it instead at the next annual meeting of the Australian and New Zealand Association for the Advancement

发表于:2019-01-29 / 阅读(96) / 评论(0) 分类 万物简史

Although chemistry had come a long way in the century that separated Newton and Boyle from Scheele and Priestley and Henry Cavendish, it still had a long way to go. Right up to the closing years of the eighteenth century (and in Priestley's case a li

发表于:2019-01-29 / 阅读(97) / 评论(0) 分类 万物简史

In January 2015, a fire in one of Russia's largest university libraries damaged more than 1 million historical documents, an incident which some media described as a cultural Chernobyl. 2015年1月,俄罗斯最大的大学图书馆之一发生了火灾

发表于:2019-02-02 / 阅读(101) / 评论(0) 分类 英语新闻

Despite pledges in the last year to fight pollution, Beijing saw barely any improvement in air quality in 2013. The Beijing Environmental Protection Bureau says the intensity of major air pollutants remained much the same in 2013 as they were in the

发表于:2019-02-05 / 阅读(100) / 评论(0) 分类 CCTV9英语新闻2014年01月

Dropping your smartphone when taking a selfie could soon be less risky, says specialist glass maker Corning. 专业玻璃制造商康宁日前表示,自拍的时候不慎掉落手机可能不再会碎屏了。 Shattered or cracked screens are the n

发表于:2019-02-05 / 阅读(89) / 评论(0) 分类 英语新闻

Finally, and perhaps a little unexpectedly, readings can be thrown out by seemingly unrelated external factorssuch as the diets of those whose bones are being tested. One recent case involved the long-running debate over whether syphilis originated i

发表于:2019-02-17 / 阅读(90) / 评论(0) 分类 万物简史

essential英[??sen?l] 美[??s?n??l] adj.基本的;必要的;本质的;精华的 n.必需品;基本要素;必不可少的东西 必不可少;至关重要;本质的;基本 词形变化: 复数:essentials 派生词: essentiality essentialness 双语例句

发表于:2019-02-21 / 阅读(210) / 评论(0) 分类 托福英语

Israeli(以色列) researchers say they have developed a powerful bait that effectively attracts and kills malaria-infected mosquitoes but is completely harmless to humans and other animals. The toxic sugar bait developed by scientists at Hebrew Univ

发表于:2019-02-25 / 阅读(145) / 评论(0) 分类 英语新闻
学英语单词
A-element
acelomatous
Albumazar
Alroy Downs
angle plate jig
anodontia
audible warning
average monthly wage
backslash
Bangladeshi monetary unit
base communications
batrochoid
beam deflection element
brown oil of vitriol
C-gene
Carter, James Earl, Jr. (Jimmy)
channel utilization
checking certificate
cockell
companion hatchway
computational results
depression-level
disinheritance
drudgers
dry lamination
emanuel svedbergs
emergency shut - off valve
enriqueta
fluobenzoic acid
Garuga pierrei
gnatcatchers
great proletarian cultural revolutions
grill(e)
hdw
i-flured
in-mobill
indecomposable root system
industrial service and institutions division
installed drivers
interface polycondensation
isotoping
japonicas
ketogluconic acid
kidney storing essence
laboratory investigation
learn to do
liquid biopsy
Longstock
mechanical-drive steam turbine
morphosyntactic
multi-factors
negative-clause
nephrozymosis
neutron slowing-down time
nkulu
nominal flow rate
noss grown
not come cheap
off axis holography
oil whirl
only natural
output uprating
P. G.
palsying
paradox of Russell
pentahydroxide
phakopsora tecta
photodimerization
point receiver
pudding-bowls
punched paper tape subsystem
reallocation of land
regulated extraction steam
retromolar triangle
root grafting
Saraktashskiy Rayon
Schlosser's treatment
screen classifier
shop-out
solar storm
spongiform microabscesses
standard oil
station siting
Stensjön
summer redbirds
swing bevel gear
symptomizing
tangential slot
tasting menu
team-ups
Teradomari
terminal aerodrome
Titagarh
treetons
typhus nodules
unconscripted
unrebuilts
urban redevelopment work
user satisfaction
Velikoye, Ozero
Vyselkovskiy Rayon
wage bargaining