Some scientists say taking medicines when you have a cold is actually bad for you.

一些科学家说，感冒时吃药实际上会对你有害。

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Some scientists say that it was the key to the success of mankind.

一些科学家说这是人类成功的关键。

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But some scientists say that is exactly what teens are doing.

但是一些科学家指出，年轻人正在做着他们年龄该做的事情。

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Some scientists say the earthquake that caused the great tsunami of two thousand four measured nine points in intensity.

VOA: special.2009.03.17

However,some scientists say such a campaign is an experiment with the health of millions of people.

VOA: special.2010.03.03

Some scientists say the amount of tenofovir in the gel may be too low.

VOA: special.2010.07.21

Some scientists say that tree species unable to tolerate warmer conditions might just re-establish themselves in cooler areas.

CNN: Global warming threatens forests, study says

Some scientists say the Chacaltaya glacier in Bolivia, which used to be the world's highest ski run, has already nearly disappeared.

BBC: Massive melting of Andes glaciers

Some scientists say quercetin holds promise for fighting fatigue and even infection.

FORBES: The Case For Performance-Enhancing Drugs In Sports