氢加成[作用];氢加合[作用]

[00:03.15]第二单元 课文A [00:06.30]tax [00:08.07]税(款) [00:09.85]generally [00:11.31]一般地,通常,大体上 [00:12.77]federal [00:14.15]联邦的 [00:15.52]type [00:16.95]类型,种类 [00:18.39]salaried [00:19.87]拿薪水的,领工资的 [00:21.34]salary [00:22.71]

发表于:2018-12-04 / 阅读(217) / 评论(0) 分类 大学英语自学教程上

[0:0]acute adapt严重的,激烈的 使适应,使适合 [0:18.7006]addition additional adequate adjective加,加法 添加的,额外的 充足的,足够的 形容词 [1:13.5063]adjust administration admission adopt校正,调整 管理,经营,支配 准许进入,准许加入 收养,采纳,

发表于:2018-12-05 / 阅读(161) / 评论(0) 分类 闭着眼睛飘单词 四级词汇

SHALL WE CHOOSE DEATH?我们该选择死亡吗? I am speaking not as a Briton, not as a European, not as a member of a western democracy, but as a human being, a member of the species Man, whose continued existence is in doubt. The world is full of

发表于:2018-12-07 / 阅读(136) / 评论(0) 分类 世界上最伟大的演讲

by Jason Marshall In past articles weve talked at length about three of the big four traditional processes used in basic arithmetic: addition (see also How to Add Quickly), subtraction, and division. However, for one reason or another, we havent yet

发表于:2018-12-07 / 阅读(148) / 评论(0) 分类 数学英语

The composition of the sun lies in this bar code. 这个条码说明了太阳的组成 All the thin lines are caused by tiny amounts of complex elements 这些细细的线条,都是微量复杂元素造成的 metals like iron and magnesium. 好比说

发表于:2018-12-07 / 阅读(182) / 评论(0) 分类 太阳科普

Broadcast: February 14, 2003 By George Grow This is the VOA Special English Environment Report. President Bush has offered a plan to speed development of technology that uses hydrogen as fuel. His goa

发表于:2018-12-07 / 阅读(175) / 评论(0) 分类 VOA2003(上)-科技导航

I am speaking not as a Briton, not as a European, not as a member of a western democracy, but as a human being, a member of the species Man, whose continued existence is in doubt. The world is full of conflicts: Jews and Arabs; Indians and Pakistanis

发表于:2018-12-12 / 阅读(146) / 评论(0) 分类 英语演讲

I couldn't get over this mess. The federal government is confirming what Joan Glickman of Pompano Beach, Florida suspected all along. Tainted drywall from China is giving off a harmful gas that's turning her air-conditioning wiring black, causing it

发表于:2018-12-20 / 阅读(136) / 评论(0) 分类 cnn2009年(十一)月

by Jason Marshall Weve spent the last few articles building our numerical vocabulary from the ground up. Today, were going to talk about something that sounds hard, but is actually pretty easy...and very useful too: the commutative property of additi

发表于:2019-01-02 / 阅读(237) / 评论(0) 分类 数学英语

This is Scientific Americans 60-Second Science. I am Cynthia Graber. This will just take a minute. Solar panels typically convert sunlight into electricity or heat. But photosynthetic vegetation converts sunlight into chemical energy. Now M.I.T.s Dan

发表于:2019-01-04 / 阅读(175) / 评论(0) 分类 Scientific American(八)月

1. according to / as stated by/ in proportion 根据...../依照..... 2. ahead of:further forward in space or time sb/sth; ealier tan sb/sth; further advanced than sb/sth along with:in addition to;together with 另外,加之,还有 3. apart f

发表于:2019-01-17 / 阅读(172) / 评论(0) 分类 托福英语

NEW YORK Plug in your car, then unplug, and drive away. More and more consumers are doing just that. At the 2014 New York Auto Show many automakers unveiled electric or hybrid vehicle to address the growing global appetite for environment-friendly ca

发表于:2019-01-30 / 阅读(147) / 评论(0) 分类 英语新闻

241. go through从头到尾 242. go without单独 243. guilty of有...罪的 244. had better最好 245. hand in hand 手拉手 ,密切关联 246. hang up 挂断 247. have one's hands full 248. have the final say 有决定权 249. head on 迎面地,正面

发表于:2019-02-03 / 阅读(122) / 评论(0) 分类 实用英语

SEOUL/WASHINGTONThe U.N. Security Council said Wednesday that it was working to craft new sanctions against North Korea after its latest nuclear test, while the United States and other world powers voiced skepticism about Pyongyang's claim that the u

发表于:2019-02-04 / 阅读(101) / 评论(0) 分类 英语新闻

Questions 12-20 The elements other than hydrogen and helium exist In such small quantities that it is accurate to say that the universe somewhat more than 25 percent helium by weight and somewhat less than 25 percent hydrogen. Astronomers have measur

发表于:2019-02-05 / 阅读(176) / 评论(0) 分类 托福英语

PREFIX 1.a-:of;on;intensive;negative,not,without;ad-;ab-. 2.ab-:away from,off. 3. ad-:to;at;for. 4. aer(o)- :relating to air . 5.al-:all. 6.ambi-:on both sides,around. 7.amphi-:on both sides,around. 8.an-:negative,not,without. 9.ana-:upon,up,on. 10.a

发表于:2019-02-06 / 阅读(187) / 评论(0) 分类 雅思英语

December 30, 1954 I am speaking not as a Briton, not as a European, not as a member of a western democracy, but as a human being, a member of the species Man, whose continued existence is in doubt. The world is full of conflicts: Jews and Arabs; Indi

发表于:2019-02-09 / 阅读(186) / 评论(0) 分类 英语美文

9月16日是墨西哥馆日,墨西哥馆五颜六色的风筝森林吸引了不少人的眼球,你知道小小的风筝里有什么大学问吗?其实风筝也有很多种分类哦,一起来看看吧。 说到kite这个单词,这也许是我们

发表于:2019-02-18 / 阅读(200) / 评论(0) 分类 英语口语

North Korea conducted a 'successful' hydrogen bomb test, Pyongyang has confirmed. The thermonuclear weapon triggered a massive 5.1 magnitude earthquake when it exploded at 10am local time on Wednesday. 平壤方面已经证实,朝鲜成功的进行了

发表于:2019-02-18 / 阅读(127) / 评论(0) 分类 英语新闻

China's State Council Information Office has held a policy briefing conference, and Huang Shouhong, who is in charge of the drafting of the Government Work Report, underlined the key methods of supply-side reforms. From the industry level, supply-sid

发表于:2019-02-25 / 阅读(181) / 评论(0) 分类 cctv9英语新闻2016年
学英语单词
agent-spectator
air-conditions
Alaska Range
amniotic
andria
angle suspension tower
astrogator
austriphorocera hirsuta
basin and range landscape
be famous for
Begonia dregei
blocking generator
Caldwell's position
Caranavi
carola
cascade protection
caustic salt
cell bath
characterisers
charpentier illusion
chromosome ring
constant rate creep
counter-plight
dialect algol (dial gol)
DIMC
double-edge
drop biscuits
explosives-laden
FGIN-2
fonning
future learning centre
glycosylhydrolase
gorse
haeing
high lag servo
hollow kernels
hopper on rails type
horizontal measures
in-situ stress
instant demoulding
intrabolus
kalaupapa
Khātūnābād
latirus craticulatus
marcus theory
Matallana, Embalse de
minimal design problem
modulus
monkey fucks
network security scanner
nightstick
non-personal selling
nonsignificance
nutmeg mace
oil-storage ship
ordinary water discharge
parkfield
paroxysms
party out of office
PC emulator
percentage of theoretical slope
petro-tympanic
phasing out period
photosensitive switch
portmanteau films
pre-battle
precast prestressed
primary caregiver
public held corporation
quadratic residue symbol
rais er
response modulation
Rhymney, R.
roller finder
rotoscol
sea needles
seroprotected
share-swap
spiery
stagily
standard component
static analysis tools
stationary chafing plate
steel pipe piling
steering wheel spoke
stibio-kalium tartaricum
strain simulator
stratographic adsorption
teacher background
tevel
throw of crank
transparency glass
triforium
types-tokens
usage factor
valve-needle-covered orifice nozzle
vertex positive wave
vitaro
wage-bills
win-lose game
wire screen ladle
yuppifies