fetus period 中文意思是什麼
fetus period
解釋
胎兒期-
The fetus develops lungs relatively late in the gestation period
在妊娠期胎兒的肺生長得相對慢些 -
Although semen develops in three stages : before birth, during puberty and in adulthood, the period around the end of the third month of pregnancy is a critical time for quality semen to develop effectively in the male fetus said the study authors
研究人員稱，精子發育歷經三個階段：出生前，青春期及成年期，懷孕第三個月末那段時間保證男性胎兒精子的有效發育。
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