keep a tag on的用法和樣例：
例句
- My wife keeps a record of our daily expenses.
我太太將日常開銷都記錄下來。 - I was told to keep the minutes at the conference.
他們叫我在會議上作記錄。 - The doctor gave him a careful examination.
醫生對他作了徹底的檢查。 - I had a medical checkup before going abroad.
我在出國前作了一次體格檢查。 - He sent out a party to spy the enemy.
他派出一個小分隊暗中監視敵人的行動。 - We must keep these people under close surveillance.
對這些人我們要嚴密監視。
