请顾客不要吸烟。

Patrons are requested not to smoke.

《牛津词典》

等候室的告示要求人们不要吸烟也不要随地吐痰。

Notices in the waiting room requested that you neither smoke nor spit.

《柯林斯英汉双解大词典》

不要吸烟，即便他们请你那么做。

Don't smoke even if invited to do so.

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