若你们去美国，最好还是“入境随俗”。

But when you go to the United States, you had better "do as the Romans do."

最佳的做法遵守耳熟能详的行事准则：「入境随俗」。

So the best approach is to follow the well-known maxim, "When in Rome, do as the Romans do."

妈咪：他们只是在表示友好。入境随俗。那意味着你需要使自己适应环境。

Mom: They are just being friendly. When you are in Rome, do what the Romans do. That means you need to adapt to your environment.