| 释义 | overfall \ˈ ̷ ̷ ̷ ̷ˌ ̷ ̷\ noun
 1.  : a turbulent surface of water caused by strong currents setting over submerged ridges or shoals or by winds opposing a current — usually used in plural
 2. obsolete  : cataract, waterfall
 3.  : a place provided for the overflow of surplus water (as from a canal or lock)
 4.  : a sudden increase of depth in the bottom of the sea or other large body of water
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