adj.快速的；[摄]感光快的；险峻的；n.急流；高速交通工具，高速交通网； 双语释义：adj.(形容词)快的,急速的 happening, moving, or doing sth at great speed; fast英英释义： rapid[ 'ræpid ]n.a part of a river where the current is very fastadj.done or occurring in a brief period of time"a rapid rise through the