prevent
v.
early 15c., "act in anticipation of," from Latin praeventus, past participle of praevenire "come before, anticipate, hinder," in Late Latin also "to prevent," from prae "before" (see pre-) + venire "to come" (see venue). Originally literal; sense of "anticipate to hinder" was in Latin, but not recorded in English until 1540s.
〔李〕[pre-=before 先；vent=to come来 ⇒“to come before so act first 先来，先行动”→] v. keep from happening；stop 预防；阻止
〔蒋〕[pre-前，先，ven来;’先来”→赶在前面→预先应付→提前准备] 预防，防止
〔李〕[pre-=before先；vent=to come来→“to come before so act earlier先来所以早行动”→] v.① keep from happening by taking measures beforehand预防