precaution /priˈkɔ:ʃən/ n. 1.［u］预防，防备，警惕: by way of precaution 为了小心/预防 2.［c］预防措施: take precautions against/at … 对…采取预防措施：［考句］It was the first time that such a precaution had to be taken at a British nuclear power station. 这是第一次不得不对英国核电站采取这种措施。