Also very effective in turning an underspin ball into a topspin one 铲球。某项活动的痴迷者。发球。
2.
Solution : to impart underspin , you must swing high to low , but when players chop down too severely and finish low , their shot hits the net 解决方案：为了要授予下旋球，你一定要由高到低挥拍,但是当球员太严重地劈砍下来而在低位完成收拍，他们的打击就挂网了。
