Extracurricular track and field training is an indispensable part in middle school and plays vital role in PE work.
课外田径训练是中学田径运动中必不可少的组成部分，在学校体育工作中起着极为重要的作用。
Extracurricular track and field training is an indispensable part in middle school and plays vital role in PE work.
课外田径训练是中学田径运动中必不可少的组成部分，在学校体育工作中起着极为重要的作用。
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