be cautious ((of, about)),guard ((against)),be on one's guard ((against)),be on the watch ((for));〔監視する〕look out, watch out ((for))
- 警戒して
- 〔慎重に〕cautiously/〔念のため〕by way of precaution
- 彼の右フックを警戒しろ
- You've got to watch out for his right hook.
- 甘い話には警戒しなさい
- Beware of tempting proposals [offers].
- 彼らはインフレを警戒している
- They are on their guard against inflation.
- 彼の巧みな言葉につられて警戒を緩めてしまった
- His smooth words put me off my guard.
- 再発の兆候を警戒する
- be on the watch for signs of recurrence
- 組合の動向を警戒する
- keep 「an eye [a watch] on movements in the labor union
- どんな小さな音にも警戒を怠らなかった
- He was alert to the faintest sound.