1. Changquan demands quickness and valor, and it is liked by young people. 长拳要求动作敏捷、英勇，它深受许多年轻人的喜爱。
2. Because of his quickness and hard work, he was soon promoted to telegraph operator and was paid $5 a week. 因为他的动作迅速且工作努力，很快就被擢升为电报操作员，而周薪也涨到$5。
3. This move had not been unforeseen, but our plans to intercept him were foiled by the quickness of his withdrawal. 我们事先并不是没有料到这种行动，但是因为它迅速撤退，使我们要想拦截它的计划落空。
英英解释
n.
1. skillful performance or ability without difficulty
2. intelligence as revealed by an ability to give correct responses without delay
3. a rate that is rapid
