- Pumping gases into the atmosphere,
向大气中排放气体 - changing the climate,
改变气候 - and, at worst...
在最糟糕的情况下 - ...causing global mass extinction.
导致全球大规模物种灭绝 - The world has rarely been stable.
地球很少呈稳定状态 - At times, a realm of fire.
有时是火的天下 - At times, a realm of ice.
有时是冰的天下
...causing global mass extinction. 导致全球大规模物种灭绝
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