In the international arena, Customs plays an important monitoring role in checking the borders for contraband, smuggling and such other non-tax activities.
Alegal
Bnormal
Croutine
Dcriminal正確答案
答案與詳解
criminal 意為「犯罪的」,與 contraband(違禁品)、smuggling(走私)同為非法行為,語意一致。
