Emily Oken, an associate professor at Harvard Medical School who studies nutrition during pregnancy, recommends that moms-to-be use moderation.
哈佛医学院妊娠营养学副教授Emily Oken认为准妈妈们应适度饮食。
Idioms tend to be informal and are best used in oken rather than written English.
成语往往是非正式的，最好用于口语，而不要用在非书面表达中。
Oken said the new study might have shown no benefit in 18-month-olds because effects in infants might be "hard to measure" or "it may be that the benefit of DHA is not as important as when you're 4.
Oken博士说，新的研究显示18个月的婴儿没有表现出DHA的助益作用可能是因为婴儿期的效果“很难测量”，或“可能是DHA的助益作用没有4岁时那样明显”。
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