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地球上的任何一个事物都要在一个特定的时期内经历发源期、成长期和衰亡期。
Everything on earth has its origin, growth and decay in a particular period of time.
youdao
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地球上的任何一个事物都要在一个特定的时期内经历发源期、成长期和衰亡期。
Everything on earth has its origin, growth and decay in a particular period of time.
youdao