门非关即开；二者择其一。

A door must be either shut or open.

youdao

他得在放弃工作和放弃原则二者中择其一。他选择了前者。

He had to choose between giving up his job and giving up his principles. He chose the former.

《牛津词典》

他得在放弃工作和放弃原则二者中择其一。他选择了前者。

He had to choose between giving up his job and giving up his principles. He chose the former.

《牛津词典》