下旋球 meaning in English

back spin
back/under spin
backspin underspin
backspinn
draw
underspin

Backhand attacking rally
发反手下旋球
Backhand topspin service
发反手下旋球
Her top spin , back spin and side spin contributed a lot to her winning of the final
她的上旋球、下旋球和侧旋球技能对她取得决赛胜利起到了很大的作用。
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。
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。