| 1. | Mark : because usually it is best of three sets , sometimes it ' s best of five , and you have to win six games to win one set , and also every game , you have to win four baslls . that is why it takes so long
马克：因为一场网球比赛是三盘两胜制，有的是五盘三胜制，一盘比赛要胜足六局，而每一局比赛要打赢四球，所以时间会很长。 |
