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Astronauts Take a Walk in Space

Broadcast: Apr 09, 2003 Two U.S. astronauts took a spacewalk Tuesday to perform exterior maintenance on the International Space Station. It was the last opportunity to fix hardware while the outpost h

发表于:2019-01-03 / 阅读(89) / 评论(0)

VOA2003（上）-科技先知

每日一词【912】replacement：替代，替补

今天我们要学的词是replacement。 Replacement, 意思是替代，替补。The coach chose Jimmy as the replacement for the injured quarterback, 教练选择Jimmy代替受伤的四分位。The basketball player just had a knee replacement surg

发表于:2019-02-06 / 阅读(40) / 评论(0)

英语每日一词

学个词Learn a Word 第912期 replacement

发表于:2019-02-06 / 阅读(39) / 评论(0)

英语单词荟萃

Archaeologists hunt for Mona Lisa model

BEIJING, May 12 (Xinhuanet) -- Italian archaeologists(考古学家) are digging the remains of Lisa Gherardini, a 16th-century woman who is widely believed to be the model for the famous portrait Mona Lisa, AFP reported on Wednesday. The team of hist

发表于:2019-02-08 / 阅读(73) / 评论(0)

英语新闻

VOA标准英语2013--3D Printers Help Heart Surgeons 3D打印机助力心外科医生

3D Printers Help Heart Surgeons 3D打印机助力心外科医生 3D printers are slowly entering everyday life and they are increasingly being used in medicine. Doctors at Washington's Children's National Medical Center say the life-size tri-dimensio

发表于:2019-02-17 / 阅读(61) / 评论(0)

VOA常速英语2013年(八月)

New Business Model Redefines Giving

An increasingly popular business model lets participating companies give to charity while making a profit. But the approach is blurring the lines between for-profit and not-for-profit organizations and raising questions about the real drivers behind

发表于:2019-02-19 / 阅读(113) / 评论(0)

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学英语单词

a-oner

Abzug, Bella(Savitzky)

asterospondylous vertebra

balanced periodic quantity

Baring, C.

belcik