cutting edge

名词 cutting edge:

1. the position of greatest importance or advancement; the leading position in any movement or field
   同义词：vanguard, forefront
2. the sharp cutting side of the blade of a knife
   同义词：knife edge

形容词 cutting edge:

1. in accord with the most fashionable ideas or style
   同义词：up-to-date, cutting-edge, with-it

1. A light, sharp-pointed sword lacking a cutting edge and used only for thrusting.
   无刃轻剑一种轻型，尖剑头的剑，但不开刃，只是用于威胁