征收关税的目的有两个：(a)通过关税调节进出口以促进和支持国内生产；

征收关税的目的有两个：(a)通过关税调节进出口以促进和支持国内生产；的英文翻译

基本释义

• The purpose of levying tariffs was twofold: (a) to regulate imports so as to promote and support domestic production;