出生前期;
The subsequent prenatal period was uneventful with a scheduled cesarean section delivery at 39 weeks.
该病患术后腹痛完全缓解,并于妊娠39周经剖腹产下健康胎儿.
Memory probably begins during the prenatal period, but little is known about the exact timing or for how long memory lasts.
记忆可能开始于出生前,但目前还不知道这确切的时间或记忆持续了多久。
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