Karen tried to swim after him but the strong undercurrent swept them apart.

卡伦试图跟在他后面游，但强大的暗流把他们冲开了。

《柯林斯英汉双解大词典》

Several swimmers had tried to swim it, but all failed.

有几个游泳者曾试图游过去，但都失败了。

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I told her she shouldn't swim after a whole night's coughing, but she refused to give up and insisted she go.

我告诉她，咳嗽了一整夜后，她不应该游泳，但她拒绝放弃，坚持要去。

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"Our research shows that, at times, tiger sharks and thresher sharks don't swim randomly but swim to specific locations, " said research leader Yannis Papastamatiou from the Florida Museum of Natural History in Gainesville.

BBC: Sharks navigate using 'mental maps'

Mr Reynolds had been camping on the island and when he woke to find the tide rising he attempted to swim to shore, but never made it.

BBC: NEWS | UK | Wales | South West Wales | Rescue as swimmers ignore danger

The report also includes a survey of more than 1, 000 parents which showed almost all (98%) believed every child should be able to swim by the end of primary school but only 40% thought their children would be able to swim to safety if they got into danger in the water.

BBC: Primary schools 'failing to honour swimming obligations'