After a heroic effort to win silver in the 10,000m open-water event, swimmer David Davies collapsed with exhaustion and had to be carried off on a stretcher.

经过英勇努力，选手大卫·戴维斯获得十公里游泳银牌后，因精疲力竭倒下，不得不用担架抬下。

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Close to the tourist centre of Pokhara, Lake Begnas has many advantages for the first-time, open-water swimmer.

BBC: Long-distance swimming in Nepal��s glacial mountain lakes

Dale Oen's death comes 18 months after American open-water swimmer Fran Crippen died during a race in the United Arab Emirates, also at the age of 26.

CNN: World champion swimmer Dale Oen dies suddenly

Although training in a pool is an essential part of an open-water swimmer's regimen, it doesn't prepare one for the kinks of swims longer than 10 miles, or at temperatures below 60 degrees.

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