?处于危险关头
... set someone's teeth on edge 使某人牙根发酸, 使... on a razor-edge 处于危险关头... on the ragged edge 接近失去自制,濒于精...
The high-stress work often puts these airmen on the razor's edge between saving a life and losing their own.
CNN: Quade: Secretive military team allows reporter inside
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。