backhand backspin service 发反手下旋球
quick backspin service 发急下旋球
forehand backspin service 发正手下旋球
long backspin service 发下旋场球 ; 发下旋长球
short backspin service 发下旋短球
deep backspin service 发下旋底线球
Services include the backhand topspin and backspin serves the forehand topspin and backspin serves and the high toss service.
发球方法包括，反手上旋球和下旋球，正手上旋球和下旋球。和高抛发球。
Services include the backhand topspin and backspin serves, the forehand topspin and backspin serves, and the high toss service.
发球方法包括，反手上旋球和下旋球，正手上旋球和下旋球。和高抛发球。
应用推荐