During this early period, the human heart goes through stages in which it resembles the hearts of various animals, before it is finally divided into four Chambers.
在这一期间，人类的心脏在最终形成四个室之前经历的阶段很像各种动物的心脏。
During this early period, the human heart goes through stages in which it resembles the hearts of various animals, before it is finally divided into four Chambers.
在这一期间，人类的心脏在最终形成四个室之前经历的阶段很像各种动物的心脏。
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