单词:men in white coats
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This is Scientific Americans 60-Second Science. Im Steve Mirsky. Got a minute? Good news for chilly doctorsyou can wear long sleeves with impunity inside hospitals, because University of Colorado researchers find that docs pick up just as much bacter
[00:00.00]Module 9 [00:17.29]Seasons [00:21.13]Unit 1 [00:27.40]The wind blows. [00:32.44]Activity 1 [00:38.19]Listen and point. [00:45.84]Spring [00:55.20]In spring,the birds sing.The flowers grow. [01:01.26]We wear T-shirts and shorts.We don't wear
DAVID GREENE, HOST: It was a pretty riveting final act to a head-spinning week. Three of the Trump administration's most senior officials separately and publicly outlined concerns or actions that diverged from their boss. NOEL KING, HOST: Yep. And th
71 种族特征与居住环境影响患心脏病的机率 DATE=7-18-01 TITLE=SCIENCE REPORT - Men's Heart Risk BYLINE=Jerilyn Watson (Start at 01'0
MADRID, May 5 (Xinhua) -- Top seed Rafael Nadal advanced into the quarterfinal of the 5.8-million-euro ATP/WTA Madrid Masters in an easy way, as opponent Juan Martin Del Potro withdrew before the match on Thursday. The Argentina US Open champ Del Pot