警惕be on guard against; watch out for; be vigilant
提高～，保衛(wèi)祖國(guó)heighten our vigilance and defend our motherland/保持～remain vigilant; keep(up)vigil/百倍～exercise the highest vigilance/放松～relax (or slacken)vigilance/喪失～ drop one’s guard;be off one’s guard/～不良思想的腐蝕 be on the alert (or guard)against corruption by bad ideas/～敵人破壞be vigilant against enemy sabotage/～野心家和陰謀家watch out for careerists and conspirators/～性vigilance;alertness |