評論
打印
1.If separated, they should check on each other periodically.
check on 檢查；核實
You should go to have the doctor check on your health.
你應當去找醫生檢查一下身體的健康狀況。
Please check on the problem and report the results at the next meeting.
請你調查一下這個問題并在下次會議時將調查結果匯報一下。
2.The program taught students to be especially on guard at parties and other high-risk campus social events.
on guard 警惕；站崗
He is constantly on guard against any threat of humiliation.
他時刻提防著任何有辱尊嚴之事。
Police were on guard at Barnet town hall.
警察在巴尼特市政廳值守。
