| 单词 | rapid | 
| 释义 | rapid1 of 2adjective  rap·id  ˈra-pəd    : marked by a fast rate of motion, activity, succession, or occurrence    rapidly adverb   rapidness noun  rapid2 of 2 noun  : a part of a river where the current is fast and the surface is usually broken by obstructions  —usually used in plural but singular or plural in construction   rapid adjectiveas in quickmoving, proceeding, or acting with great speed the rapid descent of the roller coaster made me feel very queasy Synonyms & Similar Words Relevance 
 Antonyms & Near Antonyms 
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