名詞 rapidity:

1. a rate that is rapid
   同義詞：celerity, quickness, rapidness, speediness

1. A sequence of photographs projected onto a screen with sufficient rapidity as to create the illusion of motion and continuity.
   電影一組連續(xù)的照片被投影到屏幕上并以極快的速度依次放映使之產(chǎn)生連續(xù)性和動(dòng)態(tài)的視覺(jué)
2. Rapidity of action or motion.
   急速行動(dòng)或動(dòng)作的快速性
3. Rapidity or speed of motion; swiftness.
   迅速，快速運(yùn)動(dòng)的快速或速度; 迅速
4. We are surprised by the rapidity of her recovery.
   她恢復(fù)得那么快，我們都有些驚訝。