“脐”造句

种皮上留有种脐或种痕.
The seed coat is marked with a hilum or seed scar.

偶而, 脐周淋巴结可触及.
Occasionally, lymph nodes can be found in the vicinity of the umbilicus.

方法体外培养人脐静脉内皮细胞,通过传代形成细胞的衰老模型.
Methods Human umbilical vein endothelial cells ( HUVECs ) were cultured in vitro.

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