adj.短时间发生的；急速的；迅速的；快的；险峻的
n.急流；湍滩
Cats have rapid reflexes. 猫的反应很敏捷.
The pound's rapid appreciation is creating problems for exporters. 英镑急速升值给出口商造成困难。
The rapid spread of the disease is alarming the medical authorities. 这种疾病的迅速蔓延使医疗当局感到忧虑不安。
With the rapid economical development, China's position on the international stage is getting more and more important. 随着经济迅速发展，中国在国际舞台上的地位变得愈来愈重要了。
The student is showing rapid progress in his studies. 这个学生学习上进步很快。
The old man had difficulty climbing the rapid ascent. 这位老人攀登这条陡峭的上坡路有困难。
用作名词 (n.)The first rapid we went through was the easiest. 我们经过的第一道急流是最简单的。
rapid作形容词的意思是“快的,急速的”,是正式用语,指本身运动的高速度,速率大,因而所花时间少。
rapid在句中可用作定语或表语。
rapid还可用作名词,作“急流,湍流”解,常用于复数形式。例如:The canoe shot the rapids.独木舟飞速地冲入急流。
