knife-edge

英 [ˈnaɪf edʒ]

美 [ˈnaɪf edʒ]

n.  刀刃

复数：knife-edges　

习惯用语

n.

on a knife-edge
• 胜负难料；成败未定
  finely balanced between success and failure
• The economy is balanced on a knife-edge.
  经济形势尚不明朗。
• 十分焦虑；急于知道结果
  very worried or anxious about the result of sth

牛津词典

noun

• 刀刃
  the sharp edge of a knife

柯林斯词典

• PHRASE 形势难料；结果未卜
  To beon a knife-edgemeans to be in a situation in which nobody knows what is going to happen next, or in which one thing is just as likely to happen as another.
  1. His future remains on a knife edge...
     他前途未卜。
  2. The game is poised on a knife-edge. One mistake or one piece of good luck could decide it.
     比赛形势扑朔迷离。一个失误或是一点运气就有可能决定胜负。
• ADJ-GRADED 形势难料的
  You can useknife-edgeto refer to something that is very exciting or tense because you do not know what is going to happen next.
  1. Tonight's knife-edge vote could be uncomfortably close.
     今晚投票的结果很难预料，双方实力可能会很接近，这令人紧张不安。

英英释义

noun

• a narrow boundary
  1. he lived on a knife-edge between genius and insanity

双语例句

• Living with technology is like climbing a mountain along a knife-edge which narrows as it nears the summit.
  与科技共存就像是沿着刀刃口攀登山，越临近顶点就越狭窄。
• The setup of knife-edge thermometry is designed and built to quantify the effect of the chromium beam collimation by laser cooling.
  设计搭建了刀口法测温实验装置，对激光多普勒冷却准直效果进行了定量评价。
• The team's future was on a knife-edge last night.
  昨晚，该球队前途未卜。
• Besides, in most cases the overlong distance from knife edge to the aspheric surface to be tested will decrease the precision of the knife-edge testing.
  此外，在很多情况下，刀口到待检非球面的距离很长，从而降低了刀口检验精度。
• We had to climb over a knife-edge mountain ridge.
  我们必须翻越一道陡峭的山脊。
• The students are on a knife-edge about the examinations.
  学生们对考试感到忐忑不安。
• This paper focuses on the theory, setup, and experiment of a visualization system for surface acoustic wave ( SAW) distribution based on knife-edge laser probe.
  介绍了激光刀口法声表面波（SAW）分布图像化高速测量系统的原理和系统构成，并进行了测试验证。
• 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。
• He's on a knife-edge about his exam results.
  他对考试成绩十分担心。
• Calibration of 0 class knife-edge and uncertainty evaluation
  0级刀口尺的检定及其不确定度评定