Knife-edge
n. 刀口, 锐利物, 刃状物
📖 牛津释义
knife-edge
n (usu sing 通常作单数)
1 cutting edge of the blade of a knife 刀刃.
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.
🧩 词语组成解析
knife
[naɪf]
n. 刀;匕首;刃部;手术刀;
vt. 切割，刺;伤害;
vi. 劈开;划过;
edge
[ɛdʒ]
n. 边;优势;（悬崖、峭壁的）边缘，端;锋利，尖锐;
vt. 在…上加边界;使渐进;给（刀刃）磨边，使锋利;修整;
vi. 慢慢向前移动，侧身移动;
🗣️ 情景例句
Today is the perfect example.
今天就是一个很好的例子。
Yes, I got dressed and had breakfast.
是,我穿好衣服了并且吃了早餐。
He was a famous professor of physics.
他是一位著名的物理教授。