Perl的- p选项告诉它读取和处理标准输入中的每行内容，并将结果打印到标准输出。

Perl's -p option tells it to read and process each line from standard input and print the results to standard output.

youdao

该进程被主子例程(标为：main以告诉Parrot首先运行它)调用以打印结果。

This process is called by the main subroutine (labeled with: main to tell Parrot to run it first) to print the result.

youdao

好了，它只是不会打印任何结果而已。

OK. It simply doesn't print anything.

youdao

Now I call that, and it says, 20 tell me how many heads you want, give it a 20, and tell it how many legs 56 you want, give it 56, and it prints out the answers. I know, whoop-dee-doo.

请告诉我你想要几个头，设为，然后告诉它你想要几条腿,设为,最后它会打印结果，哇哦。

麻省理工公开课 - 计算机科学及编程导论课程节选

OK. It simply doesn't print anything.

好了，它只是不会打印任何结果而已。

麻省理工公开课 - 计算机科学及编程导论课程节选