backspin serve造句

例句与造句

1. 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。
2. It's difficult to find backspin serve in a sentence. 用backspin serve造句挺难的