EPISODE · Oct 27, 2017 · 9 MIN
生态学·动物 鲸去哪里上厕所？
from 给孩子的博物学
鲸类在深海取食，又在浅海排尿的做法，实际上起到了一个把深海的营养物质带到浅海的作用，这对海洋食物链来说，是一个非常重要的工作。
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生态学·动物 鲸去哪里上厕所？
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