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The Fetus Yawns


10 weeks

From The Biology of Prenatal Development.Buy Now

Script: 到10週,對上眼瞼的刺激 導致眼睛往下翻。

胎兒打哈欠, 經常打開和關閉嘴巴。

All ages referenced to fertilization, not last menstrual period.
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