- The world's first mass extinction.
这是世界上第一次大规模灭绝 - The fatal freeze was caused by a 60% drop in carbon dioxide.
致命的冰冻 是由二氧化碳减少60%所导致 - Without this greenhouse gas to warm it,
没有了温室气体保暖 - the planet was plunged into an ice age.
地球突然陷入冰河期 - One that would last for 200,000 years.
这个时期将持续20万年 - At its peak, almost half the world was covered in ice,
巅峰时期 世界上将近一半区域被冰覆盖 - causing the demise of 85% of all life,
导致85%的生命死亡
the planet was plunged into an ice age. 地球突然陷入冰河期
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