It means swimming, cycling and running with the ego checked at the door.

它意味着游泳，骑单车和跑步都需在入口处经过自我检查。

youdao

Shark is the only fish in the sea that has no pneumatocyst, which means that it will swim to the bottom or even die if stopping swimming for a little while.

没有气囊的鱼，只要停止游泳一小会儿，它就会沉下去甚至会死掉。

youdao

And for freshly minted high school grads, it means the carefree days of sunshine and swimming pools--not to mention home-cooked meals--are numbered.

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"In general, look it up first by whatever means, " he said, noting sharks falsely popped up in photos after Sandy, swimming in front yards and down streets, along with doctored images of dramatic storm clouds and wind whipping around the Statue of Liberty.

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