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按月计算的妊娠过程及其相应的腹部形态
Progress of pregnancy by months and corresponding changes in abdominal shape.
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9个月后，子宫向下移动
After 9 months, the uterus moves downward.
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后三个月
在妊娠的最后3个月（中国大陆医院习惯于称为“晚期妊娠”——译者注），因为潜在的并发症在这个时期最可能发生，孕妇必须要更加频繁地去看医生。当胎儿生长引起的孕妇腹部膨隆超过肚脐时，小宝宝的生长速度甚至显著加快。到了妊娠第38周，胎儿生长已经达到顶峰，在此时才真正被称为胎儿。只有到了此时，它才做好了出生的准备。
妊娠的开始与终结的准确时间差异较大，甚至同一个孕妇每次的妊娠也是如此。经常参加体育锻炼的妇女通常比活动不多的妇女分娩时间要短，生女孩常常比生男孩花费时间要短，在一些非常罕见例子，妊娠持续的时间超过280天。
Pregnancy
The
Woman During Pregnancy
The Third Trimester
During the last three months of pregnancy, the woman has to visit her doctor more often because potential complications are most likely to occur during this period. The growth of the fetus becomes even more obvious as the swelling in the woman's abdomen reaches higher above the navel. By the thirty eighth week of pregnancy, the fetus has attained its maximum growth and is then called term fetus. It is ready to
be born.
The exact time from the beginning to the end of pregnancy varies, even with the same woman. Women who engage in vigorous physical exercise usually deliver sooner than others, girls are often born a little earlier than boys, and, in some very rare cases, pregnancies last over 280 days.
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