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killy then began challenging the basic theories of racing technique.
2019年6月六级真题(第一套)听力 Section B
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The explosive new style helped cut killy's racing time dramatically.
2019年6月六级真题(第一套)听力 Section B
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The next year, he won three gold medals in the winter Olympics, a record in ski racing that has never been topped.
2019年6月六级真题(第一套)听力 Section B