单词：rawsthorn
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That pottery can be dated, and so tell you the date of the city itself. By dating the pottery of all the settlements along the ancient lost branches of the Nile, that will tell you when each settlement was inhabited. And therefore, when that particu
遗失的法老城市
We humans are known to help out members of our own families. When it comes to business we call it nepotism. Now plants have demonstrated the same predilection, in a study published in the American Journal of Botany. Previous research showed that plan
Scientific American(十一)月
And you sometimes need to be shocked out of that. 而有的时候我们需要把这种感觉抖掉。 Now I'm not going to pretend that this is easy. It isn't easy. It's incredibly painful. 现在我不想假装这是件容易的事情。这并不容易
TED演讲教育篇
Plants Share Light If Neighbor Is Related A study in the American Journal of Botany finds that plants can tell if they're next to a relative and will grow to allow the kin more access to light. Cynthia Graber reports. We humans are known to help out
60秒科学
Workers at Seattle's Pike Place look for sustainable sources of seafood Ann Dornfeld | Seattle, Washington 14 July 2010 Photo: VOA - A. Dornfeld Customers at Pike Place Fish Market are finding a different selection of seafood now that the stall is go
VOA标准英语2010年(七)月
GUANGZHOU, March 24 (Xinhua) -- Germany's world No.1 table tennis player Timo Boll moved one step closer to retaining the Volkswagen Cup title here on Wednesday. Boll came back from 2 games down against Japan' s Jun Mizutani in their semi-final encou
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