suppose that they're playing and Serena is at the net

假设比赛中塞丽娜现在在球网附近
and the ball is on Venus' court,

球现在在维纳斯的半场
and Venus has reached the ball and Venus has to decide

维纳斯接到了球之后要决定
whether to try to hit a passing shot

是从塞丽娜的左侧打穿越球呢
past Serena on Serena's left or on Serena's right.

还是从塞丽娜的右侧打呢
Notice I'm going to exclude the possibility of throwing up a lob for now,

请注意我排除了打高吊球的可能性
just to make this manageable.

这样案例才在可控范围之内
So basically the choice facing Venus is

现在维纳斯面对的问题是
should she try to pass Serena to Serena's left,

她应该把球打到塞丽娜的左侧
which is Serena's backhand side

即反手一侧呢
or to Serena's right, which is Serena's forehand side.

还是应该打到右侧即正手一侧呢
People're familiar enough with tennis to understand what I'm talking about?

熟悉网球的同学明白我在说什么吧