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神经心理学家Kim Gorgens论述了如何更好地保护我们的大脑,免受脑震荡的风险,并且倡导让孩子戴上头盔。
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This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Landfills produce methanewhich can be valuable as an energy source. But scientists haven't known why landfills make so much methane. The solid waste in
MADRID, Dec. 8 (Xinhua) -- FC Barcelona coach Tito Vilanova on Saturday confirmed that Leo Messi will play in his side's BBVA Primera Liga tie away to Betis Sunday. Messi had been a doubt after being carried off injured after a collision with Benfica
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