topspin

The moonball—a high, heavy topspin shot—drives lots of players crazy.

月亮球即又高又重上旋球，这种球让很球员抓狂。

Topspin or overspin is when the ball is spinning over itself in the direction moving forward.

许网球手于落地回击上旋球有误会. 我将试着简略地阐明一下.

And at the other end, lay one in short – and the point is over, Federer able to flatten it out, or lace it with topspin, the ball exceptionally heavy and often unreturnable.

另一方面，费德勒时常能一击致命，这在于他能够击出平击球或者上旋球，球势格外沉，令人难以回防。