名词快，迅速
1. 快：rapidly 迅速地 | rapidness 快 | rapido 快车
2. 快; 迅速 (名)：rapidly 很快地, 迅速地, 立即 (副) | rapidness 快; 迅速 (名) | rapier 轻巧而细长的剑 (名)
noun
1. danci.911cha.com
1. a rate that is rapid
Synonym: celerity quickness rapidity speediness