How could Amanda and Brendan break world records with relatively low stroke counts and stroke tempos?

Amanda和Brendan是怎样在相对较少的划水次数和较慢的动作节奏中打破世界记录的呢？

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Usain Bolt blazed into the Olympic history books last night, becoming the first man to break world records while winning both 100m and 200m RACES at a single Games.

乌塞恩·博尔特昨晚载入奥林匹克史册，成为第一位在一届奥运会上获得100米、200米短跑双料冠军并打破世界纪录的运动员。

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Its scientists shoot, with their rockets, for the moon; its films spread Hollywood's culture around the globe; its athletes break world records; even its wines now rank with the best of France's.

它的科学家将火箭发射到月球；它的电影将好莱坞的文化传播到全世界；它的运动健儿打破了世界纪录；它出产的美酒可与法国的顶级佳酿并驾齐驱。

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Hang Yingwei, president of Shanghai Construction Group Co, told Xinhua news agency that the tower will break many world records.

FORBES: China's Tallest Building Gets Even Bigger

Growers of massive marrows and other outsize vegetables have failed in their attempts to break some world records at a horticultural show near Peterborough.

BBC: Clive Bevan