诱变基因；增变基因

词汇大师-- George Carlin, 1937-2008

AA: I'm Avi Arditti with Rosanne Skirble, and this week on WORDMASTER: remembering a comedian who took a serious interest in language. George Carlin died of heart failure at a hospital in Santa Monica, California, on June twenty-second. RS: The stand

发表于:2018-12-30 / 阅读(23) / 评论(0)

词汇大师(Wordmaster)

数学英语 24 What is the Commutative Property of Addition?

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

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By Melinda Smith Washington, DC 14 September 2006 watch Alzheimer report Researchers say it may soon be possible to scientifically diagnose Alzheimer's disease, without having to wait for autopsy confirmation after the patient has died. Clinical tri

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2006年VOA标准英语（九月）

VOA慢速英语2009-People in America - George Gershwin, 1898-1937:

VOICE ONE: I'm Barbara Klein. VOICE TWO: And I'm Steve Ember with People in America in VOA Special English. Today we continue our report about the life and music of one of America's greatest composers, George Gershwin. (MUSIC: Rhapsody in Blue) VOIC

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VOA慢速英语2009年（二）月

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People in America - Gene Kelly, 1912-1996: His Movies Made Dance Popular in America SHIRLEY GRIFFITH: I'm Shirley Griffith. STEVE EMBER: And I'm Steve Ember with the VOA Special English program, People in America. Every week we tell about a person im

发表于:2019-01-12 / 阅读(64) / 评论(0)

2011年VOA慢速英语(六)月

英语单词大师：George Carlin, 1937-2008: He

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英语单词大师-Word Master

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学英语单词

accommodation time

acetaldehyde oxidation

acoustic inertia

acoustooptic signal processing

Acranthera sinensis

aggregate area of wires

allochthonous limestone

alternating current welder

arbitrations

archdiocesan

association technique