Yùnmā men yīdìng yào bǎozhèng chōngzú de shuìmián.
Expectant mothers really have to make sure they get enough sleep.
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Affectionate/friendly term used on parenting apps (宝宝树，妈妈帮) and social media. More formal: 孕妇 (expectant woman). Often plural/generic: 孕妈们 as a mode of address.
