There is always a lifeguard to ensure that no one comes to any harm
總是有一個救生員在場以確保無人受到傷害。
This month millions of American kids can forget about classroom bells and set off for grandparents' homes, sleep-away camps and lifeguard stands ．
這個月，數以百萬的美國小孩可以忘掉上課鈴聲，出發前往祖父母家、外宿營地以及沙灘上的救生員站。
Don't swim unless there is a lifeguard on duty.
除非有救生員值班,否則不要游泳。
Do you think I can become a lifeguard one day?
你覺得我會成為一名保鏢嗎？
Research and Analysis on the Actuality of Lifeguard of Mass Swimming in China
我國大眾游泳救生員現狀調查與分析