大气成分

Today, I speak from this podium a final time as your president. As I depart, I want to thank all of you - students, faculty, alumni and staff - with whom I have been privileged to work over these past years. Some of us have had our disagreements, but

发表于:2018-12-19 / 阅读(62) / 评论(0) 分类 英语演讲

I use it today again to apologize to the personal mistake I have made and embarassment I have caused. I made this apology to my neighbors, to my constituents, but I make particularly to my wife Huma. I hope to be able to continue to work at citizens

发表于:2018-12-20 / 阅读(87) / 评论(0) 分类 CNN2011年(六)月

The Great Pacific Garbage Patch may be disappearing, and not in a good way. New research presented at the biannual meeting of the American Chemical Society reveals that polystyrene actually can break down in seawater. Polystyrene is probably better k

发表于:2018-12-24 / 阅读(93) / 评论(0) 分类 Scientific American(八)月

A conservative US state senator who has voted against gay rights measures during his 14 years in office has confessed he is gay。 Republican Roy Ashburn came out during a radio interview in California, where he sits on the state legislature。 He ha

发表于:2019-01-06 / 阅读(83) / 评论(0) 分类 阅读空间

One main goal in the renewable energy field is to find an efficient, inexpensive way to split water into hydrogen and oxygen. The hydrogen could then be used as a fuel source for vehicles or fuel cells. Typically, an electric current breaks the water

发表于:2019-01-08 / 阅读(101) / 评论(0) 分类 Scientific American(四)月

Calls for the resignation of Congressman Anthony Weiner keep coming from both sides of the aisle. The New York lawmaker has decided instead of stepping down, he'll undergo treatment following his Twitter scandal. Fellow Democratic Congressman Steny H

发表于:2019-01-08 / 阅读(92) / 评论(0) 分类 2011年NPR美国国家公共电台6月

The status of Congresswoman Gabrielle Giffords of Arizona is uncertain following a shooting in Tucson. In one report, a hospital spokesperson says the congresswoman is undergoing surgery, but there are conflicting reports regarding her condition. She

发表于:2019-01-08 / 阅读(78) / 评论(0) 分类 2011年NPR美国国家公共电台1月

The rains are finally coming back to Kenya, but drought still persists in the central region of Isiolo South. There, many pastoralists have had to give up their way of life. It looks like a war zone. What once were emaciated, dehydrated cattle are no

发表于:2019-01-13 / 阅读(61) / 评论(0) 分类 VOA标准英语2010年(一月)

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(114) / 评论(0) 分类 托福英语

Hong Kongs stock market has moved into line with global peers, with the exchange operators launch yesterday of a circuit breaker to prevent extreme volatility. 香港股市昨日启用市场波动调节机制以防止极端波动,此举使其与全球

发表于:2019-02-05 / 阅读(73) / 评论(0) 分类 英语新闻

哈佛大学校长告别演讲 Today, I speak from this podium a final time as your president. As I depart, I want to thank all of you - students, faculty, alumni and staff - with whom I have been privileged to work over these past years. Some of us

发表于:2019-02-06 / 阅读(123) / 评论(0) 分类 英语演讲

New research suggests agriculture has greatly increased the amount of dust blowing off of West Africa, the world's largest source of atmospheric dust, and may have been one factor driving the decrease in rainfall in the region over the past several c

发表于:2019-02-07 / 阅读(141) / 评论(0) 分类 VOA标准英语2010年(七)月

Good bye and good luck! by Lawrence H. Summers, President of Harvard University 再见,好运! 哈佛大学校长 劳伦斯 萨默斯 Today, I speak from this podium a final time as your president. As I depart, I want to thank all of you - studen

发表于:2019-02-07 / 阅读(163) / 评论(0) 分类 实用英语

I am a liberal. I believe government is often the solution, not always the problem. I believe government should enact laws that protect rights, not strip them away. I'm for laws that expand equality, not restrict it. I believe in creating policies, n

发表于:2019-02-17 / 阅读(97) / 评论(0) 分类 趣味英语

PARIS, Sept. 21 (Xinhua) -- Euronext announced Monday a partnership with the Shanghai Stock Exchange (SSE) to enhance the promotion and marketing of its cash, derivatives, commodities and index data in China. According to Euronext, the partnership wi

发表于:2019-02-18 / 阅读(55) / 评论(0) 分类 英语新闻

LONDON, Jan. 20 (Xinhua) -- British Shadow Chancellor of the Exchequer Alan Johnson resigned on Thursday for family and personal reasons.I have decided to resign from(辞职) the shadow cabinet for personal reasons to do with my family. I have fo

发表于:2019-02-18 / 阅读(94) / 评论(0) 分类 英语新闻

This applicant shows that her interest in public interest law flows naturally from her volunteer activities and life experiences. When you finish this essay, do you have a sense of unity and completion? She tied her conclusion both to the highlights

发表于:2019-02-18 / 阅读(123) / 评论(0) 分类 阅读空间

Nigeria is Africa's most populous nation and its biggest oil producer. The West African country exports more than two million barrels of crude oil a day. Despite its oil wealth, however, a new government study says the number of Nigerians sinking int

发表于:2019-02-19 / 阅读(72) / 评论(0) 分类 英语新闻

GWEN IFILL: We return now to the story of Brexit, and a look at the generational divisions among British voters in last week's referendum. Hari Sreenivasan is in London. HARI SREENIVASAN: Carshalton, less than 15 miles from the center of London. Unli

发表于:2019-03-09 / 阅读(144) / 评论(0) 分类 PBS访谈社会系列

Leaders 社论 Into the endgame 进入尾声 How Parliament should weigh up the Brexit deal 英国议会应该如何权衡退欧协议 At last, Britains game of three-dimensional chess with the European Union is entering its closing phase. 最终,英

发表于:2019-03-10 / 阅读(191) / 评论(0) 分类 经济学人综合
学英语单词
addiction-related
Adonis vernalis
alarmest
alfred alistair cookes
almsgiver
altitude correction factor
amphotropic virus
aparigraha
argipressin
attribute name
backtalk
base chord
bearbaiter
beer garden
bobcat
bridgetowns
business applications
carbide tip
carry point
casting tolerance
communication check
cranial capsule
cutting-out for individual cylinder
Dangur
delocalized electrons
depot level
diphenylethylenes
disorganized schizophrenias
Don Pong
eight-thousand-dollar
electromagnetic vibration sand screen
equilibrium flash vaporization
expected receipts
extended electron beam
feed circuit
fifth-inning
firewarning
flacons
forespeakings
Gyrodactylosis
hard hearted
historical review
hobby horse dance (england)
hot machining
hubli-dharwar
imped
infrared beam-riding system
Intermag conference
intirnal sizing
inventory-final
inverities
investment representative
ischemic necrosis of femoral head of adult
Juramento
ketohexonic acid
knotgrass
Kotorski Zal.
Lappi
Let my girls hang
limonia (melanolimonia) aurita
liquid crystal displays
manpower allocation procedure
masuda
matricizes
metalastik
meter board
metrological performance
miliukov
negative-pressure
neutron death
neutron densuty distribution
Ngaparou
one-speed neutron
period of oscillation
Phrymaceae
post-procedure
pure line (johannsen 1903)
put out fire
radial g
rapid radioactive contamination indicator
reparation commission
respirators
s.b.s.
sampradaya
sciatic dislocation
sensationalness
solid body rotation
solid-fuel ramjet (sfrj)
stage fluctuation
sublimit
syphon(pipe,tube)
tally plan
teichoic acid
Thomas-Fermi atom model
Tredemide
unja
unrushed
voucher account
whirl instability
with a good countenance
yak hair
ZEG, Z. E. G