Be they warm spells, cold snaps or prolonged droughts, the precipitous climate changes of the past all happened for essentially the same reason.
Be they warm spells, cold snaps or prolonged droughts, the precipitous climate changes of the past all happened for essentially the same reason.
过去所有严峻的气候变迁，本质上都有著相同的起因，无论是暖期、短冷期亦或冗长的乾期。