interactive multi-point and multi-ball training
...交互式多点多球训练 [gap=768]able tennis；connecting technique；track changing awareness；active defense tactic；interactive multi-point and multi-ball training ..
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interactive multi-point and multi-ball training
互动式多点多球训练
以上为机器翻译结果，长、整句建议使用 人工翻译 。