rap·ids
noun/ˈræpɪdz/
/ˈræpɪdz/
[plural]- part of a river where the water flows very fast, usually over rocks
（河的）急流；湍急的河水 - to shoot the rapids (= to travel quickly over them in a boat)
快速穿过急流
- to shoot the rapids (= to travel quickly over them in a boat)