verb · to be used by everyone, such as a standard language or textbook

普通话是全国通用的语言。

verb · of two or more things, able to be used in place of each other

这两种机器的零件是可以通用的。

verb · to use anywhere or anytime, typically of a card, ticket, or permit

这种通票在全市的公共交通工具上都通用。