on edge

if someone is on edge, they are anxious and unable to relax

如果一个人处于on edge的状态，那么就是说他们会感到焦虑，无法放松。

想象一下你在边缘挣扎的情况，通常都是会感到不安的，所以英国人说on edge(在边缘上)，也有紧张、焦虑的意思。

He is on edge because their test results should have posted online hours ago.

他很抓狂，因为他们的测试结果本应该在几个小时前就公布在网上。

Is something wrong? You seem a bit on edge this morning.

出什么事了?你今早似乎有些烦躁。