cautioned
/ˈkɑː.ʃən/
动词
（警察）正式警告
The newspaper cautioned its readers against buying shares without getting good advice first.
报纸告诫读者事先没有获得好的建议，不要购买股票。
（足球比赛中，裁判出示黄牌）警告
/ˈkɑː.ʃən/
名词
谨慎，小心，慎重
We need to proceed with/exercise caution (= be careful in taking action, making decisions, etc.)
我们必须谨慎行事。
（警察对违法者的）口头警告
As it was her first offence, she was only given a caution.
由于是初犯，所以只给了她一个口头警告。
（足球比赛中，裁判出示黄牌作出的）警告