| 单词 | knife-edge |
| 释义 | knife-edgen. 刀口, 锐利物, 刃状物 knife-edge knife-edge AHD: [nºf“µj”] D.J. [6na!f7ed9]K.K. [6na!f7Wd9]n.（名词）1. A sharp cutting edge.刀刃，锋刃：锋利的、切割的刀刃2. A sharp, narrow edge or border:摇摆不定的处境；极微妙的状态：锋利而狭窄的边或边缘：“saying lines that teeter on the knife-edge between literature and lunacy”(&b{Vincent Canby})“吟咏着处在文学与疯人呓语徘徊的诗句”(文森特·坎比)3. A wedge of metal used as a low-friction fulcrum for a balancing beam or lever.刃形支承：一种楔形金属，用作平衡木或杠杆的摩擦小的支撑物 |
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