In 1890 he proposed that evolution was irreversible: that 'an organism is unable to return, even partially, to a previous stage already realised in the ranks of its ancestors'.
1890年,他提出进化是不可逆转的:“一个有机体无法回到其祖先先前到达的阶段,即使是部分逆转,也不可能。”
I have no idea if these stories are even partially true.
我不知道这些故事哪怕有半句属实。
If the user's goal is known, even partially, that information can be used to provide personalized guidance.
如果用户的目标已知或部分已知,该信息就可被用来提供个性化指南。
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