n.
1.(社会,团体的)习俗,惯例[C][U]
The celebration of Christmas is a custom.
庆祝圣诞节是一种风俗.
2.(个人的)习惯[C]
3.(顾客对商店等的)惠顾[U];顾客[U]
4.(常大写)海关[the P]
Did you have any trouble with the Customs?
你通过海关有麻烦吗?
5.关税[P]
a.
1.订做的,订制的[B]