| 词汇 | precaution | 
| 释义 | precaution /prɪˈkɔːʃ(ə)n/n.预防措施;预防方法 to take precautions against diseases预防疾病的措施 He took the precaution of locking his  door when he went out.当他外出的时候谨慎地锁上门。 | 
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