Critics say the messages show climate change scientists discussing ways to discredit other theories about global warming.

VOA: special.2009.12.12

And each time one of these errors occurs, or you get multiple errors that compound each other, then you've got a lot of potential error introduced in these messages.

每当有误差发生,或多重误差复合叠加,然后你所得到的信息,就会包含很多潜在的误差

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Other artists around the world are spreading their own messages through hip-hop music.

VOA: special.2009.10.14