be careful ((about, of, with; about [in] doing; not to do; that))；be cautious ((about, of))；take care ((not to do))；watch out ((for))
- この家は用心が良い
- This family locks up carefully.
- 用心に傘を持って来ました
- I brought an umbrella with me just in case.
- 火事だけは起こさないようにと用心に用心を重ねていた
- I took every precaution (imaginable) against fire.
- 病気にならないよう用心しなさい
- Take care not to get sick.
- 落石にご用心
- Watch out for falling rocks.
- あの男には用心しなさいよ
- 「Keep an eye on [Be careful of] that man.
- あまり強引にならないように用心した
- I guarded against becoming too aggressive.
- すりにご用心
- Beware of pickpockets.／Pickpockets operate here.
- 足下にご用心
- Watch [Mind] your step!
- 火の用心
- Guard against fires!／Prevent fires!
