Research indicates the key skill for guaranteeing the successful rate and stability of forehand attack is to return a ball at it initial rising period or initial down period.
经研究发现，在来球上升初期和下降初期击球是保证攻球稳定性和成功率的关键技术。
Research indicates the key skill for guaranteeing the successful rate and stability of forehand attack is to return a ball at it initial rising period or initial down period.
经研究发现，在来球上升初期和下降初期击球是保证攻球稳定性和成功率的关键技术。
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