心脏是脊椎动物器官发生过程中最早形成的结构之一。
The heart is one of first structures to form during organogenesis in the vertebrate.
心脏是脊椎动物器官发生过程中最早形成的结构之一。
The heart is one of first structures to form during organogenesis invertebrate.
心脏是脊椎动物器官发生过程中最早形成的结构之一。
The heart is one of first structures to form during organogenesis invertebrate.
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