on edge
紧张、不安或焦虑的状态；在紧张或紧迫的情况下
口语·描述焦虑或易怒状态
英文释义
feeling nervous, anxious, or irritable
例句
She's been on edge all week waiting for her exam results.
典故来源
源于“刀刃”或“边缘”的意象，形容人像站在悬崖边一样紧张不安。