第三个使用案例和第四个使用案例的代码基本上是相同的，因此我将向您展示如何根据标题进行排序，并将第四个使用案例留作练习，请您自行完成。

The code for the third and fourth use cases will be nearly identical, so I'll show you how to sort by title and leave the fourth as an exercise for you to complete on your own.

youdao

它通常使用一些低级的作弊手法而任何一个人只要稍加练习就能学会，三卡把戏也一样。

It always turns out to be some low-level cheating which almost anyone could get the hang of with a little practice. Same with the three-card trick.

youdao

在练习中交替使用三个位置。

Alternate each of the three positions throughout practice.

youdao