逆转录酶

U.S. President Donald Trump says a meeting with North Korean leader Kim Jong Un will take place as planned in Singapore on June 12. The announcement reversed an earlier decision from Trump to cancel the meeting on the Norths nuclear program. The pres

发表于:2018-12-08 / 阅读(45) / 评论(0) 分类 2018年VOA慢速英语(六)月

Health Report - New Drug Shows Promise Against Worm Disease Experts worry that the parasite that causes schistosomiasis could become resistant to an existing treatment. Transcript of radio broadcast: 25 March 2008 This is the VOA Special English Hea

发表于:2018-12-15 / 阅读(50) / 评论(0) 分类 VOA慢速英语2008年(三)月

[Note: I originally covered this topic September 16, 2006. The transcript you see now on the page is a new version that was updated March 5, 2009. Some of the reader comments at the bottom relate to the earlier version.] Grammar Girl here. Today's to

发表于:2019-01-02 / 阅读(86) / 评论(0) 分类 英语语法 Grammar Girl

Grammar Girl here. I'm on vacation this week, but before I left I updated one of the early episodes that I took down a few months ago. I hope you enjoy this new and improved version. Today's topic is addictive versus addicting, and we'll get to use a

发表于:2019-01-02 / 阅读(105) / 评论(0) 分类 英语语法 Grammar Girl

One of the hardest calls I've ever had to make was to tell Larry that I could not accept the job. 于是,我打了有史以来最痛苦的一个电话,告诉拉里我不能接受这份工作。 Larry pressed me on why, and I thought about telling

发表于:2019-01-02 / 阅读(56) / 评论(0) 分类 向前一步

This is Scientific American's 60-Second Science. I'm Steve Mirsky . Got a minute ? Germanys Harald zur Hausen and Frances Luc Montagnier and Francoise Barre-Sinoussi share the 2008 Nobel Prize in Physiology or Medicine, awarded October 6th. Barre-Sin

发表于:2019-01-08 / 阅读(100) / 评论(0) 分类 Scientific American(十)月

Transcript This is Scientific American's 60-Second Science. I'm Adam Hinterthuer . Got a minute? Apparently all of the gyms in the suburbs can't compensate for a good old walk. At least that's the story told by a report in the September issue of the

发表于:2019-01-08 / 阅读(69) / 评论(0) 分类 Scientific American(八)月

The author of the The Age of Miracles: A Novel (now out in paperback) reveals the kind of I'm sorry that can turn a marital mistake into a moment of connection. 1. I'm sorry I locked us out of our apartment building that night last January, while you

发表于:2019-01-08 / 阅读(100) / 评论(0) 分类 英语小短文

Make a Splash! Now, the VOA Learning English program Words and Their Stories. This is the show that explains the origin and usage of common American English expressions. Today, we are going to make a splash! Yes, you make a splash when you jump into

发表于:2019-01-12 / 阅读(87) / 评论(0) 分类 2016年VOA慢速英语(六)月

AS IT IS 2016-03-19 President Obama to Visit Cuba Sunday 奥巴马总统周日出访古巴 President Barack Obama travels to Cuba Sunday, becoming the first American president to visit the communist-ruled island nation in almost 90 years. Obama admin

发表于:2019-01-12 / 阅读(88) / 评论(0) 分类 2016年VOA慢速英语(三)月

AS IT IS 2015-01-08 Nations Preparing to Deal with Climate Change 多国准备应对气候变化 In 2014, the United Nations released a series of climate reports that showed temperatures on Earth are rising. That is the bad news. The good news is tha

发表于:2019-01-12 / 阅读(229) / 评论(0) 分类 2015年VOA慢速英语(一)月

A: I met David at the post office yesterday. 昨天我在邮局看到David了。 B: Never mention him anymore. 别再提他了。 A: After all he is your friend. 毕竟他是你的朋友。 B: It is dead and buried. 那是过去的事情了。 dead a

发表于:2019-01-21 / 阅读(93) / 评论(0) 分类 迷你对话学地道口语

Dream what you can become A snake that basks in the sun The kettle cries when it's done Become it and just keep going The fight was losing it's fun And I never knew if I won It can live and die and become Learn it and just keep going A friend that yo

发表于:2019-02-11 / 阅读(53) / 评论(0) 分类 美国乡村音乐

No matter how carefully we examine a text, it seems there's always one more little blunder waiting to be discovered.But these 10 tips should help you see (or hear) your errors before anybody else does. 不论检查文章是有多仔细,总是还有其

发表于:2019-02-13 / 阅读(52) / 评论(0) 分类 阅读空间

单词 单词是文章的细胞,是理解的基础。但是,单词却是很多四级考生的最主要问题。单词应当怎么背?背什么单词书?在迷茫中,同学们买了很多的单词书,背 这背那,结果发现单词仍旧是

发表于:2019-02-18 / 阅读(52) / 评论(0) 分类 英语新闻

No matter how carefully we examine a text, it seems there's always one more little blunder waiting to be discovered.But these 10 tips should help you see (or hear) your errors before anybody else does. 不论检查文章是有多仔细,总是还有其

发表于:2019-02-18 / 阅读(46) / 评论(0) 分类 英语新闻

单词 单词是文章的细胞,是理解的基础。但是,单词却是很多四级考生的最主要问题。单词应当怎么背?背什么单词书?在迷茫中,同学们买了很多的单词书,背这背那,结果发现单词仍旧是

发表于:2019-02-19 / 阅读(59) / 评论(0) 分类 英语新闻

If you're looking for a challenging situation to practice your English, just pick up the telephone. 身在职场,打电话是不可避免的。对于有国际业务的公司来说,用英语打电话也是家常便饭。 Not being able to see the

发表于:2019-02-22 / 阅读(62) / 评论(0) 分类 实用英语

1. Can I have this delivered? 能送货上门吗? 还能这样说: Can you deliver this to me? Can this be delivered? 2. Can you tell me the delivery time? 能告诉我送货时间吗? 还能这样说: Can you tell me when it can be delivered

发表于:2019-02-22 / 阅读(50) / 评论(0) 分类 情景会话口袋书人际篇

The outer core is in many ways even less well understood, though everyone is in agreement that it is fluid and that it is the seat of magnetism. 外核在许多方面被了解得更少,虽然大家都认为它是液态的,是产生磁力的地方。

发表于:2019-02-25 / 阅读(70) / 评论(0) 分类 万物简史
学英语单词
acardias
Adephos
advisory funds
aflatoxins M
aluminum plant
Angerboda
Antichristic
aphthovirus
appeal against a charge
appellativeness
aquanaut work
arch contour
astragaluss
batching by weight
Bragg-Gray principle
butt cable
c-series
character specifier
charge storage flip-flop
chargehouse
consistency limit
copy-protections
deaf theater
desire of
double-sideband multiplex equipment
dray-horses
dummy pill
eddr
electric performance
entocythere
erratic variation
eye-brain system
fazzini
fertilizer unit
fifty-second
flash back voltage
FTIR-Ramanbb
fueling-defueling system
gas fuel nozzle
half-days
hand tester
have belief in
heavy dumper
Inspector Poo-sow
iophobia
Klisura
leakage testing socket
lethal dose (LD)
line-of-sight course
linear wave
locomotive repair in works
loppered
man-induced factor
massicotite
Maurer's nomogram
maybelle
mechanical thermal conversion
Monticelli d'Ongina
Mutāli'
Myodin
niobium-stabilized
noncondom
onto something
oological
otono
P.V. diagram
Pan-Asianism
penalty kill
phosphatidate
phrenicoabdominal branches
piston unit area power
positive air pressure control
post-detection integral
purple osier
push-back
pyxine sorediata
ramera
reputational
responsible cabinet
returned cheque
revenues from special assessment
rolling speed control
rotary planing
Ruffini cylinder
saccharine vegetable
San Jaime
scissortailed flycatcher
segur
Semenchenko
shuttle feeler bracket
somesthesis
sports-minded
successour
time multiplexed system
toggle-type tablet machine
trichroic mineral
tubotaiwine
twigil
Vanoise, Messif de la
variable speed generator
Yandina
yard arm group