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Lifeguard
01
近卫兵
someone who is employed at a beach or swimming pool to keep watch and save swimmers from drowning
例子
Lifeguards constantly watch out for swimmers in the pool.
The lifeguard warned the swimmers about the dangerous rip currents.
The lifeguard swiftly pulled the child to the shallow end of the pool.
The lifeguard kept a lookout for swimmers in distress.
Lifeguards monitored the poolside to ensure safety.
