Heavy drinking during pregnancy can lead to spontaneous abortion or a range of disabilities known as fetal alcohol spectrum disorders, of which fetal alcohol syndrome is the most severe.

怀孕期间酗酒可能导致自然流产或被称为胎儿酒精谱系障碍的一系列残疾，其中以胎儿醇中毒综合征最为严重。

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Only one dose of the live vaccine is required to provide long-term immunity but the vaccine that is currently in use may result in spontaneous abortion if given to pregnant animals.

提供长期免疫只需要一剂活疫苗，但目前所使用的疫苗如果用于怀孕动物，则可能造成自然流产。

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The pictures depict more grotesque health effects than the smaller labels recommended in the United States, including one showing a fetus with the warning that smoking can cause spontaneous abortion.

那些图片比起在美国使用的小标签显示了更多对健康奇怪的影响，比如一幅带着吸烟可能导致流产警告的胎儿图片。

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In more than 75% of female cases it occurs without symptoms, but, if left untreated, it may cause inflammation of the pelvis, spontaneous abortion and infertility.

ECONOMIST: The invisible worm

The reason for this was that the polyandrous females suffered a far lower rate of spontaneous abortion, which occurs when genetic incompatibility between the maternal and paternal genomes results in an immunological conflict between mother and embryo.

ECONOMIST: Polyandry