名词
中文翻译：妊娠
同义词：
['pregnancy', 'gestation', 'pregnancy period']
例句：
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1.She was pregnant with twins.
她怀有双胞胎。
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2.The doctor advised her to take a break from work during the pregnancy period.
医生建议她在怀孕期间休息一下。
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3. Pregnancy is a natural process that occurs in women.
怀孕是女性自然经历的一个过程。