/prɪˈkɔ:ʃn ||; prɪˈkɔʃən/noun [C] a precaution (against sth) something that you do now in order to avoid danger or problems in the future 预防，防备，防范（措施）: You should always take the precaution of locking your valuables in the hotel safe. 你始终应当采取防备措施，把贵重物品锁进旅馆的保险箱内。precautions against fire/theft 防火╱防窃措施 ➔precautionary /prɪˈkɔ:ʃənəri; US -nerɪ ||; prɪˈkɔʃənˌɛrɪ/ adj