要是没有太阳的辐射热，地球将会是一个冰冻的球体。

The earth would be a frozen ball if it were not for the radiant heat of the sun.

《柯林斯英汉双解大词典》

“地球的气温上升，几乎世界上所有冰冻地区都在融化，”他说。

"The earth's temperature increases, melting virtually all ice regions of the world," he said.

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自从几十亿年前地球上出现第一个生命开始，气候就剧烈地变化着，时常是从一个时期突然进入另一个时期——从炎热的湿季到冰冻期。

From the moment life began on the planet billions of years ago, the climate has swung drastically and often abruptly from one state to another - from tropical swamp to frozen ice age.

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