每个阶段表示的组件包含一定数量的线程。

Each stage is a component that has a number of threads.

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相当数量的教练员依然处于经验训练阶段；

Many coaches are still at experience training stage;

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相当数量的教练员依然处于经验训练阶段；

Many coaches are still at experience training stage;

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