单词:low-level bog
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Hello, Im Callum Robertson and this is Entertainment. Next Monday, August th 27 , in Britain is a national holiday or what we call a bank holiday and several thousand people will be heading off to a small village in Wales which is hosting the World B
神奇校车带领孩子们进入浩瀚的科学领域,游梭于生物科学、地球科学、太空科学、气象学、古生物学等各门学科中。被纽约时报评为最新鲜有趣、最富有创意和想象力的科学启蒙方式。孩子
By Mike O'Sullivan Los Angeles 27 March 2006 A museum in Los Angeles is bringing to life the people who lived in northern Europe thousands of years ago. Well-preserved bodies and artifacts from fog-sh
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WASHINGTON, March 30 (Xinhua) -- A trace amount of radioactive(辐射性的) iodine(碘) has been found in a sample of milk from the west state of Washington, the U.S. Environmental Protection Agency and the Food and Drug Administration (FDA) sai