While swimming, I usually come up for air every 5 seconds.

游泳时我通常每5秒钟换一次气.

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Diving into water won't help – they'll wait till you come up for air.

潜入水中不起作用:它们会等你上来透气.

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Pelicans wait for the fishes to come up for air to capture them.

鹈鹕会等鱼浮出水面换气时将其捕食.

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