音标:['sistrɔn] ;
n. 顺反子, 作用子
[化] 顺反子
n (genetics) a segment of DNA that is involved in producing a polypeptide chain; it can include regions preceding and following the coding DNA as well as introns between the exons; it is considered a unit of heredity
词型变化:名词复数形式 : cistrons
【近义词】

Michael, thanks for taking the time to talk一 can you start by telling me a little about how TXP got into the NPI business? 迈克尔,感谢您花时间与我交谈。首先,您能否简单地谈谈TXP是如 何进入新产品导入(NPI)业务的

发表于:2018-12-28 / 阅读(58) / 评论(0) 分类 创业成功人士访谈录

Winter Holidays. This is the time of the year when many movie goers crave lavish productions. And holiday movies echo that spirit. Hollywood shines with glitz, over-the-top special effects and expensive film productions. Three fit the bill: Black Swa

发表于:2019-01-03 / 阅读(86) / 评论(0) 分类 VOA标准英语2010年(十二)月

Dong Lu Rm 549, Office Tower 2, Xingye Center No.18, Jian Guo Men Nei Ave. Phone: 13910212358 Beijing China (100005) Email: liudong@263.net -------------------------------------------------------------------------------------------------------- WORK

发表于:2019-01-06 / 阅读(102) / 评论(0) 分类 实用英语

This is Morning Edition from NPR news. I am Steve Inskeep and I am Susan Stamberg. Russian and Chinese forces today begin 8 days of joint military exercises. Some ten thousand troops are expected to take part, making this their largest joint military

发表于:2019-01-08 / 阅读(150) / 评论(0) 分类 2005年NPR美国国家公共电台

BBC Capital asked recruiters, hiring managers, and career coaches to share some of the most egregious errors they see in applications and how to fix them. BBC Capital咨询了招聘人员、招聘主管以及职业生涯教练,让他们说说自己见

发表于:2019-01-08 / 阅读(67) / 评论(0) 分类 求职英语

By Robert Raffaele Washington 27 March 2008 A new type of surgery may make it easier for patients who would otherwise require a more invasive procedure. The new type of operation makes it possible for doctors to remove unwanted tissue through a patie

发表于:2019-01-09 / 阅读(114) / 评论(0) 分类 VOA标准英语2008年(三月)

By Scott Stearns White House 07 January 2006 President Bush President Bush says the U.S. economy is strong entering 2006, despite slower-than-expected job growth. -------------------------------------

发表于:2019-01-10 / 阅读(148) / 评论(0) 分类 2006年VOA标准英语(一月)

President Barack Obama has an intense week ahead as he and leaders of his Democratic Party in Congress prepare for a crucial vote on health-care reform. The president used a speech in the Midwestern state of Ohio to drive home his points about the im

发表于:2019-01-13 / 阅读(65) / 评论(0) 分类 VOA标准英语2010年(三月)

Egypt-Israel Ties Are Stronger Than They Appear Egypt's mediation of a deal swapping Palestinian prisoners for Israeli soldier Gilad Shalit is the interim military government's first successful foray into high-profile foreign affairs. The move appear

发表于:2019-01-14 / 阅读(63) / 评论(0) 分类 VOA标准英语2011年(十月)

Blame it on the Goose, Gotcha feeling loose Blame it on the 'Tron, Gotcha panties off Blame it on the ah-ah-ah-Alcohol, Blame it on the ah-ah ah-ah ah-Al-Co-Hol She said she usually don't (don't), But I know that she front (front) 'cause shawty know

发表于:2019-01-14 / 阅读(87) / 评论(0) 分类 节奏布鲁斯

讲解 Today's key word is robot 机器人 A robot is a machine which is programmed to move and perform certain tasks automatically. Here's an example: She worked like a robot. 她工作起来如同一个机器人. 延伸 In the movie, Avengers2: A

发表于:2019-01-17 / 阅读(58) / 评论(0) 分类 英语悠选脱口秀

U.S. and Iraqi forces have pushed into the insurgent stronghold of Samarra, north of Baghdad and taken control of key government buildings and religious sites. U.S. military officials estimate close to 100 insurgents were killed, and say one U.S. sol

发表于:2019-01-19 / 阅读(65) / 评论(0) 分类 VOA双语新闻 Bilingual News

As was the common practice with the gods of Olympus,Zeus and Hermes were visiting the world in disguise.One day they came to a village.At a thousand house sthey knocked,and a thousand times they were refused rest and food and drink.At last

发表于:2019-01-30 / 阅读(122) / 评论(0) 分类 阅读空间

Vientiane, Nov. 6 (Xinhua) -- Pledges for stronger trade promotion as well as reducing protectionism to put the world's economy on a sustainable path was the main focus of the 9th Asia Europe Meeting (ASEM) that concluded here on Tuesday. Leaders of

发表于:2019-01-31 / 阅读(56) / 评论(0) 分类 英语新闻

Blame It 是Jamie Foxx个人第三张录音室大碟《Intuition》的第二支单曲,这是Jamie Foxx自2006年以来的第一首打入Hot 100排行榜Top 10的单曲,在2006年,他与南方说唱歌手卢达克里斯(Ludacris)合作的单曲《Unpredictable》在Hot 100单曲榜中最高曾排在第八位。 歌词 Ar

发表于:2019-02-06 / 阅读(129) / 评论(0) 分类 音乐咖啡厅

A new trailer for the upcoming film Avengers: Age of Ultron gives fans one more look at the movie, which will be released on May 1. 即将上映的《复仇者联盟2:奥创纪元》新预告片让粉丝们进一步大饱眼福,电影将于5月1日

发表于:2019-02-06 / 阅读(56) / 评论(0) 分类 阅读空间

HONG KONG After a customer canceled a large order at the last minute, shares in Aixtron, a German high-tech company, sank fast. 香港一个客户在最后时刻取消一笔大订单后,德国高科技公司爱思强(Aixtron)的股价迅速下滑。

发表于:2019-02-07 / 阅读(56) / 评论(0) 分类 英语新闻

Entertainment Weekly: In the first Avengers film, Cap was the outsider still trying to figure out where he belonged. This time, hes the leader. 《娱乐周刊》:在复联1中,美队还是一个局外人,一直在试着搞清楚自己属于是属

发表于:2019-02-08 / 阅读(71) / 评论(0) 分类 阅读空间

歌曲 : Blame It 艺人 : Jamie Foxx Ft.T-Pain 音乐星级 : ★★★ 所属专辑 : Intuition 发行年代 : 2008 风格 : RB 介绍: 时隔近三年,奥斯卡影帝吉米福克斯(Jamie Foxx)发行了自己的全新专辑《Intuition》,在本周的Billboard 200专辑榜中,本张专辑空降季

发表于:2019-02-11 / 阅读(77) / 评论(0) 分类 节奏布鲁斯

The German government withdrew its approval for a Chinese firm to purchase Aixtron, which makes semiconductor equipment, after the US secret services raised security concerns, a German media report said Wednesday. 在美国特务机关提出安全担忧

发表于:2019-02-17 / 阅读(46) / 评论(0) 分类 英语新闻
学英语单词
Abolition Acts
acid milling red
age coating
amphora crassa grge.
archeophytes
aromatical
attent
backed by
bannerols
be paralyzed
bell 212a
Billroth's disease
Bordj Turki
braking fluid
brette
camp-mediell inequality
careers advisor
cat hair
confirmative sale note
congenital disorder
connectional
conocephalus divergentus
cross lots
dates back to
destruction of documents
Dickey, James
digitex
Dome Creek
dynatron characteristics
enbibing
Estopen
ethylanthracene
Euro note
fasting hypoglycemia
ferrous ammonium citrate
fianc'ee
fibre stress
fixed knife planer
floating power station
Gallina, Cayo
gas measuring apparatus
gastronomiques
genotype frequency
ground electronic system
gullahs
hexagon ring spanner
horizontal format
hydrogen sulfide spring
incident field
inhour unit
Kaolinitum
Kimper
labiolingual
lafortune
latexion
log on
low power communication device
Maengsan-gun
Marlborough Downs
mediterranean-style
mercury distant reading thermometer
metal filament reinforcement
metaorogeny
mocassin
Nasswald
nuclear medicine data process system
oceanography engineering
odey
off-hollywood
order close-out
organismic dispersal
parachute brake
passerines
pembo
pixdetector
polaccas
propinqua
puneno
pylorospasm
retractable spear
rist-baulk
riverfield
rotary disc extractor
rough endoplasmic reticulum
solar turboelectric drive
specific capsular substance
stamp one's foot
step in attenuation
surrender an insurance policy
temperature class
terrestrial waters
took the bait
topological upper limit
trichonocardiasis axillaris
universal library
vindictivenesses
Walkertown
Water finds its level.
William Ralph Inge
work list by work center
x-ray deep therapy
Ziemann's stippling