lifeguards

例句:

• Two RNLI lifeguards helped guide them over a zebra crossing to safety.
  来自BBC
• Children swim at the pool, under the watchful eye of lifeguards.
  孩子们在救生员的监护下在水池里游泳。
  
• The lifeguards must be trained to deal with any sort of emergency.
  救生员一定要接受训练,学会应付各种紧急情况.
  
• Children were to remain under the supervision of the lifeguards.
  孩子们将一直处于救生员的监控之下.
  
• In a swimming pool, there are lifeguards.
  来自NEWYORKER
• He made headlines across the world and was praised by lifeguards.
  来自BBC