规模庞大、层层叠加的天气事件，一次就能笼罩地球大片区域，持续数月甚至数年之久。
In less than a lifetime, heat waves have evolved from sporadic, isolated episodes to massive, cascading weather events that can blanket vast swaths of the planet for months or even years at a time.
路透社
在不到一代人的时间里，热浪已从零星、孤立的事件演变为In less than a lifetime, heat waves have evolved from sporadic, isolated epis
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