The human young must learn to perceive these affordances, in some degree at least, but the young of some animals do not have time to learn the ones that are crucial for survival.
人类的幼兽必须学会感知这些启示,至少在某种程度上是这样,但是一些动物的幼兽没有时间去学习那些对生存至关重要的启示。
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