Yīshēng jiànyì tā shǒushù hòu yí ge yuè nèi búyào tóngfáng.
The doctor advised her not to have sex for a month after the operation.
Tips
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A polite euphemism used by doctors and within families, softer than 做爱. Because this sense dominates, avoid 同房 when you only mean sharing a room; say 住一个房间 instead.