Warning: file_put_contents(): Only 0 of 5207 bytes written, possibly out of free disk space in /www/wwwroot/ppbbu/5678977.com/index.php on line 55 backhand backspin service是什么意思，backhand backspin service的翻译，backhand backspin service音标、读音、用法和例句_加林查网西语词典
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。