morning sickness in pregnancy
妊娠期晨吐
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Morning sickness starts very early in pregnancy, often before the baby's hormone levels become significant in comparison with her mother's, so initially there shouldn't be a connection.
晨吐在怀孕初期就开始了，这时候宝宝的激素水平和母亲的激素水平还不能相提并论，所以这之间并没有什么联系。
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