n. provitamin
其他研究表明， 孕前维生素补充剂可以生育能力。
Other studies indicate that preconceptional vitamin supplementation can increase fertility.
尽量缩小任何营养水平差距，补充每天的日常产前维生素---最理想的情况是在怀孕时的前几个月开始。
To help fill any nutritional gaps, take a daily prenatal vitamin — ideally starting a few months before conception.
至于任何一种维生素或补品，服用前请咨询你的医生。
As with any vitamin or supplement, please consult your doctor before taking.
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