为了遏制地球温室效应的加剧，必须控制大气中CO_2的浓度。
In order to lighten this effect, the concentration of CO_2 in atmosphere must be controlled.
它们产生的浓烟加剧了全球温室效应，只会使所有的问题变得更加严重。
Global warming, which is fed by their fumes, will make all these problems even worse.
它们产生的浓烟加剧了全球温室效应，只会使所有的问题变得更加严重。
Global warming, which is fed by their fumes, will make all these problems even worse.
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