lifeguard
n. 救生员；警卫
vi. 当救生员
复数 lifeguards
例句
He's more like a film star than a lifeguard, really.
与其说他像个救生员，倒不如说他像个影星，真的。
《柯林斯英汉双解大词典》
There is always a lifeguard to ensure that no one comes to any harm.
任何时候都有一名救生员以确保没有人会受到伤害。
Do you need the help of a lifeguard?
你需要救生员的帮助吗？
