but since they're not equally tall,

但由于他们显然不一样高
I should just pick the best one.

我只好选最高的那一个了
Let's go back to my Yankee's example,

我们再回到洋基队的例子
if I want to pick a sub-team of the Yankee's,

如果我要从洋基队中选出一个分队
I'm allowed to pick any number of people,

人数我可以任意定
to have the highest average, batting average, in that sub-team.

但我想使分队的平均击球水平最高
The way to do it is to find the Yankee

我的方法就是从扬基队中
who has the highest batting average and just pick him.

选出击球水平最高的一名队员即可
Let's do one more example.

我们再来看一个例子
Let me use the front row of students here,

请前面这排同学起来配合一下
so here's my... Can I get this front of students to stand up a second?

前面这排的同学请你们站起来一下好吗
This is a part of the row.

这一排就够