Before you read Watch a video about the greenhouse effect,then do the matching work on P34 about it. ·the greenhouse effect:温室效应 ·greenhouse gases:温室气体 ·atmosphere:n.大气层Watch a video about the greenhouse effect, then do the matching work on P34 about it. • the greenhouse effect: • greenhouse gases: • atmosphere: Before you read 温室效应 温室气体 n. 大气层