足球是一项激烈的体育运动。
和小学相比，中学的学业要求更高，竞争更激烈，课外活动包括体育运动也是一样。
Compared to primary school, academics were much more demanding and competitive, as were extracurricular activities, including sports.
体育运动的开展越来越普及，体育竞赛的竞争也越来越激烈。
The development of sports is becoming more and more popular and the competition in athletic contests is becoming more and more drastic.
体育运动的开展越来越普及，体育竞赛的竞争也越来越激烈。
The development of sports is becoming more and more popular and the competition in athletic contests is becoming more and more drastic.
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