当人类出现时，进化过程已经在其身上建立了道德感的牢固基础。
By the time humans came around, evolution had forged a pretty firm foundation for a moral sense.
当人类首次作为一个物种出现时，他们依旧跟多种类人猿共存。
When humans first emerged as a species, they shared the planet with many types of ape.
当人类首次作为一个物种出现时，他们与许多种类的猿分享了这个星球。
When humans first emerged as a species they Shared the planet with many types of ape.
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