rapid

迅速的、快速的、急速的

The city has seen rapid growth over the past decade.

這座城市在過去十年間快速成長。

急促的

Her breathing was rapid and shallow after the climb.

爬上來之後，她的呼吸又急又淺。

急流、湍流常用複數

We rode a raft down the rapids on the river.

我們坐著橡皮艇順著河上的急流而下。