Maternal smoking can damage the unborn child.
母亲吸烟可能会伤害未出生的孩子。
Maternal smoking remains one of the biggest risk factors for cot death.
母亲吸烟仍旧是婴儿猝死症的最大的危险因素之一。
Maternal smoking increased the risk of miscarriage and premature delivery.
孕妇吸烟增加流产及早产危险。
Smoking exacerbates asthma, and maternal smoking during pregnancy increases the risk for the child.
吸尘会加剧哮喘，怀孕期母亲吸尘会增加孩子患病的风险。
In both studies, the connection was independent of IQ, family income, race, or maternal smoking during pregnancy.
在两个研究中，这种联系和智商、家庭收入、种族或怀孕期间吸烟无关。
There was no difference in maternal smoking, drinking and having disease during pregnancy between case and control group(P>0.05).
母亲孕期吸烟、饮酒及患病史在病例组及对照组间差异无统计学意义（P>0.05）。
The study found that children exposed in the womb to maternal smoking had differences in DNA methylation, an epigenetic mechanism in which small chemical compounds are added to DNA.
研究发现，母亲孕期吸烟，孩子在DNA甲基化上表现出差异，DNA甲基化是一种表观遗传学机制，在这个过程中化学小分子添加到DNA上。
At both time points, maternal tobacco smoking was also associated with reduced lung function in both premature and full-term infants.
同时，不论是早产儿还是足月儿，其母亲吸烟和婴儿的肺功能减低有关系。
At both time points, maternal tobacco smoking was also associated with reduced lung function in both premature and full-term infants.
同时，不论是早产儿还是足月儿，其母亲吸烟和婴儿的肺功能减低有关系。
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