custom在解释为“习惯、风俗”的意思时即可以为可数名词也可以为不可数名词。在当成可数名词使用时,就有复数形式customs.
例句
He walked through customs.
他步行通过了海关。
The old customs are dying.
旧的习俗正在消亡。
The ship was boarded by customs officials.
海关官员登上了这艘船。
The origin of the custom is obscure.
该习俗的起源鲜为人知。
This quaint custom should be revived.
应该恢复这一独特的风俗。
