基本解释[体育]发反手下旋球英汉例句双语例句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。backhand backspin service更多例句专业释义体育发反手下旋球