happening in a short time or at a great rate
快的,迅速的;迅捷发生(或进行)的
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the country's rapid economic decline 该国经济的迅速衰退
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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
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his breathing was rapid and jerky .他呼吸急促且伴有抽搐。
a fast-flowing and turbulent part of the course of a river
急流,湍滩。
"mid 17th cent.: from Latin