It is this layer of the atmosphere with its "greenhouse gases," including hydrogen, carbon dioxide, methane, nitrous oxide, fluorocarbons and ozone, that maintains the Earth's temperate atmosphere.
保持地球冷暖適中的大氣就是「溫室氣體」，它的組成包括水氣、二氧化碳、甲烷、氧化亞氮、氟氯碳化物、臭氧等。