| n (usu sing 通常作单数) 用法:
1 cutting edge of the blade of a knife 刀刃. 用法:
2 (idm 习语) on a knife-edge (a) (of a person) nervous (about the outcome of sth) （指人）（对某事物的结果）十分焦虑:
He's on a knife-edge about his exam results. 他对考试成绩十分担心.
(b) (of a situation, etc) at a critical point （指情况等）处於紧要关头:
The success of the project is still very much on a knife-edge. 这一项目的成败目前仍处於关键时刻. |