从1991年起，我国在东部沿海港口地区兴办了15个保税区。

China has set up 15 bonded zones in its coastal cities from 1991.

youdao

从1991年起，我国在东部沿海港口地区兴办了15个保税区。

China has set up 15 bonded zones in its coastal cities from 1991.

youdao