清单4的最后两行代码迭代了所有条目，并打印出它们的标题。

The last two lines of code in Listing 4 will iterate over each entry, printing out its title.

youdao

清单4的最后两行代码迭代了所有条目，并打印出它们的标题。

The last two lines of code in Listing 4 will iterate over each entry, printing out its title.

youdao