happening in a short time or at a great rate 快的,迅速的;迅捷发生(或进行)的 the country's rapid economic decline. 该国经济的迅速衰退。 they lost three wickets in rapid succession. 他们很快连输三局。 ■(of movement or activity) characterized by great speed (移动,活动)快速的 his breathing was rapid and jerky. 他呼吸急促且伴有抽搐。
noun
(一般作 rapids)a fast-flowing and turbulent part of the course of a river 急流,湍滩
派生 rapidity noun rapidly adverb rapidness noun 语源
mid 17th cent.: from Latin rapidus, from rapere 'take by force'