On a geologic time scale, the recent, human-induced planetary warming has been quite sudden, and the huge ice sheets have only just started to respond.
从地质时间的尺度来看，近来人类活动引起的地球变暖现象是相当突然的，巨大的冰盖这才刚刚开始有所反应。
These chemical changes decrease the acidity of the water and enable the it to absorb more CO2 from the air, thereby helping to reduce planetary warming.
这样的化学反应将会降低海水的酸性，并使之能够从大气中吸收更多的二氧化碳，从而有效减轻全球温室效应。
Beisner's group believes that planetary warming is part of a natural cycle and is not cause for alarm. He said he was not concerned that novels could increase people's fear of climate change.
贝斯纳小组则认为地球变暖是自然界循环的一部分，并不预示什么，他说他并不认为小说能增加人们对气候变暖的恐惧。
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