imperceptible
英 [?mp?'sept?b(?)l]
美[,?mp?'s?pt?bl]
- adj. 感覺(jué)不到的；極細(xì)微的
英英釋意
- 1. impossible or difficult to perceive by the mind or senses;
- "an imperceptible drop in temperature"
- "an imperceptible nod"
- "color is unperceivable to the touch"