/ˈræpɪd ||; ˈræpɪd/adj happening very quickly or moving with great speed 快速的；快捷的；迅速的:
She made rapid progress and was soon the best in the class. 她进步很快，不久便成为班上成绩最好的学生。 ➔rapidity /rəˈpɪdəti ||; rəˈpɪdətɪ/ noun [U] (formal 正式) The rapidity of change has astonished most people. 转变之快令大部份人感到惊讶。 ➔rapidly adv