when in Rome, do as the Romans do
US /wen ɪn roʊm, duː æz ðə ˈroʊmənz duː/
UK /wen ɪn roʊm, duː æz ðə ˈroʊmənz duː/

1.
入乡随俗, 到什么山唱什么歌
When in a foreign place, follow the customs of the people who live there.
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I don't usually eat with my hands, but when in Rome, do as the Romans do.
我通常不用手吃饭,但是入乡随俗嘛。
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I know it's different from what we do at home, but when in Rome, do as the Romans do.
我知道这和我们在家做的不同,但是入乡随俗嘛。