feel/be on edge

每日一詞--- feel/be on edge

就是緊張不安，坐立難安的意思；nervous or worried.

例句1：Many students feel on edge before exam. 考試前大部分的學生都會緊張
例句2：As a father, he always keeps his children uncomfortably on edge. 為人父的他總讓自己的孩子如坐針氈。