相关单词同义词prevention, prophylaxis, keep, one, s, eye, on, the, ball, keep, one, s, eyes, peeled, 近义词 safeguard 保卫者, notification 通知, insurance 保险, forewarning 预先警告的, protection 保护, safety measure 防护措施, preventive measure 预防措施, provision 食品, security 安全, deterrent 威慑的, guard 看守, caution 警告, forethought 远虑, care 关心临近词precede, precarious, Precautions, precautionary, precaution valve, precaution value, precaution hamper, precautionary TAC, precaution saving, precautionay test, precaution system, precaution device相似词precancerous, precarious, precariously, precast, precede, precedence, precedent, preceding, 返回 precaution