最后一行打印QueryPath对象中匹配项的数量，最终打印的结果为4。

The last line, which prints the number of matched items in the QueryPath object, will print 4.

youdao

第二行打印出了book 的值 -- Programming Scala。

The second line prints the value of book, which is “Programming Scala”.

youdao

事实上，每条记录可以打印为三行：一行打印name元素，一行打印地址的street元素，另外一行打印地址的city、state和zip code元素。

In fact, each record can be printed with a line for the name components; a line for the street component of the address; and a line for the city, state, and zip code components of the address.

youdao

I don't have to go read what it printed out in the screen. This has returned a value that I can use. Because I could do a test to say, is this a return value? If it's not, I'll do something else with it. So the binding is still there, it simply doesn't print it out.

我不想读到屏幕中打印出来的这行字,程序返回过一个我能够使用的值,因为我可以做个小测试，来说明这是否是返回的值，如果不是，我可以做一些其它的事,而这个绑定依然在这儿，没有打印任何东西。

麻省理工公开课 - 计算机科学及编程导论课程节选

A progress bar is not supposed to print one hundred lines just to update its status; generally we like to see a little animation.

一个进度条不应该是打印100行,只是更新它的状态，一般地，我们,想看到一点生机。

哈佛公开课 - 计算机科学课程节选

I'm again, saying print argument's new line.

我再次指明，打印参数的新行。

哈佛公开课 - 计算机科学课程节选