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custom是"风俗, 习俗"，customs怎么成了"海关, 关税"?
串起| custom, customs, customer, customize, customized 1. custom是“风俗，习俗”，加个s，customs怎么就成了“海关，关税“? 2. “顾客就是上帝”该怎么翻译？
词根学英语387/482
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