相关单词同義詞vigilance, alertness, keep, one, s, eye, on, the, ball, keep, one, s, eyes, peeled, watching, shield, 近義詞v. defend, preserve, protect, shield n. patrol, sentinel, sentry, watchman反義詞v.disregard, ignore, neglect臨近詞guardian, guaranty, Guarda, Guardo, guards, Guardi, guarded, Guardon, Guardia, guarder, guardee, Guardiel相似詞guano, guaraná, guarantee, guarantor, guard against sth, guard cell, guard dog, guard of honour, 返回 guard