问题: 求翻译
Even longtime swimming coaches profess to being baffled by the more than three dozen world records broken in the last 18 months in pools around the world. They wonder how to fully explain such a sudden and widespread explosion of speed in a sport contested since the first Olympics more than a century ago.
解答:
即使是长期的游泳教练都自称被18个月内36个世界纪录的打破感到困惑。他们不知道如何充分解释一个在一个多世纪前的第一次奥运会上有着争议的运动，突然地和广泛地热衷速度。
注：dozen是12的代名词，所以three dozen 就是3×12=36
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