名词
中文翻译：正常灭绝
同义词：
['normal extinction', 'normal extinction', 'normal extinction']
例句：
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1. The species has experienced a normal extinction due to habitat loss.
由于栖息地丧失，该物种经历了一次正常的灭绝。
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2.The study found that the normal extinction rate of this species is relatively low.
研究发现，这种物种的正常灭绝率相对较低。
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3.The extinction of the dinosaurs was a natural process, not a result of human activity.
恐龙的灭绝是一个自然过程，而不是人类活动的结果。