There are lifeguards at all Olympic swimming events
奧運會泳池配備救生員

No bombing, no diving, no petting - you wouldn't think Olympians would need to be told all this. Or that Adam Peaty or Simone Manuel might need rescuing.
嚴禁推碰追逐，嚴禁跳水，嚴禁攜帶寵物——正如你覺得用不著和奧運選手說這些話，你一定也認為沒必要為亞當?皮緹或西蒙娜?曼紐爾這樣的專業選手安排救生員。

But Brazilian law insists that swimming pools over a certain size are watched over by lifeguards. There are about 75 on duty at the various Olympic centres during swimming, diving, synchronised swimming, water polo and white-water kayaking events. Some 150 lifeguards were also in attendance same at the London games in 2012.
但是巴西法律里嚴格規定，超過一定尺寸大小的泳池必須配備救生員。在游泳、跳水、花樣游泳、水球和激流皮艇賽事期間，有約75位救生員在各個奧運場館待命。有150位救生員還曾在2012年倫敦奧運會當值。

There isn't really very much for them to do, and onlookers have commented how bored many of them look.
實際上這些救生員沒什么事可干，旁觀者表示，他們當中許多人滿臉寫著空虛無聊。

You may think they would be pleased to have a prime seat for the games, on the other hand it's reported they get paid just ￡260 ($341) for a fortnight's work.
你可能會覺得他們因占據觀賽最佳位置而喜不自勝，但據報道，他們工作14天的報酬只有341美金（折合260英鎊）。