One factor contributing to this internal tussle is the placenta, the fetal organ that connects to the mother's blood supply and nourishes the fetus while it grows.
这场比赛的成因之一是胎盘。胎盘是连接胎儿和 母体血液系统的器官。它为胎儿提供发育需要的营养。
单词 | fetal organ |
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原声例句
TED-Ed(视频版) One factor contributing to this internal tussle is the placenta, the fetal organ that connects to the mother's blood supply and nourishes the fetus while it grows. 这场比赛的成因之一是胎盘。胎盘是连接胎儿和 母体血液系统的器官。它为胎儿提供发育需要的营养。 |
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