rapids
noun[plural]
uk/ˈræp.ɪdz/us/ˈræp.ɪdz/adangerouspartof ariverthatflowsveryfastbecause it issteepand sometimesnarrow:
急流,湍流Theyshot(=travelledthrough)the rapids in acanoe.他们乘独木舟飞速穿过急流。
Steve Smith/Blend Images/GettyImages
Watercourses & waterfalls
- amazon
 - arroyo
 - beck
 - bourne
 - brook
 - burn
 - cascade
 - cataract
 - Euphrates
 - fluvial
 - fordable
 - gulch
 - maelstrom
 - plunge pool
 - rill
 - riverbed
 - riverine
 - runnel
 - waterfall
 - waterway