问题描述：
英语翻译
But until recently,the academic edge gained by participating in sports was thought to come from the increased self-confidence,the better mood,and the ability to concentrate that comes from burning off steam in exercise.
主要是 that comes from burning off steam in exercise.
But until recently,the academic edge gained by participating in sports was thought to come from the increased self-confidence,the better mood,and the ability to concentrate that comes from burning off steam in exercise.
主要是 that comes from burning off steam in exercise.
问题解答：
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