Customs Anti-smuggling Act Article 2
"Commercial ports" referred to in this Act means the harbors, airports, or other commercial ports opened to foreign trade by the government with the establishment of a Customs office.
中文原文 海關緝私條例第2條
本條例稱通商口岸，謂經政府開放對外貿易，並設有海關之港口、機場或商埠。