The greenhouse effect could have got out of control, turning our planet into a furnace.

温室效应可能会失去控制，把我们的地球变成一个大熔炉。

He didn't answer. He fiddled with the controls, turning the heater up and the music down.

他没有回答。他正忙着摆弄开关，把暖气打开，把音乐关小。

But the controls turn off again when the test is over, leaving cars emitting up to 40 times the legal pollution limits.

但当测试结束时，控制装置再次关闭，导致汽车的排放量达到法定污染限值的 40 倍。