不过，许多认证中心提供演示功能程序，让您免费生成演示(测试)证书。

However, many Certification Authorities offer a demo facility that lets you generate demo (test) certificates at no charge.

youdao

既然你已经懂得了这些基本操作程序，我来给你示范一下操作高级功能程序。

Now that you know the basics, let me show you some more advanced functions.

youdao

WS - Coordination规范中描述的系统是一个通用的功能程序，用来管理与整个应用程序相关的活动或任务。

The system described in the WS-Coordination specification is a generalized facility to allow the management of the activities or tasks related to the overall application.

youdao

So let's go ahead and introduce a couple other capabilities so that we can finally start writing programs that maybe print out charts or interact with the user, play games, or the like.

让我们继续来介绍其他几个功能,以便我们最终能开始写程序,那样可以打印图表或与用户交互，打游戏之类的。

哈佛公开课 - 计算机科学课程节选

This is boring. In fact, you can do some nice things to prove what is the class of functions you can compute with straight-line programs, and what you'd see if you did that is, it's not particularly interesting.

这很无聊，实际上，你可以通过做一些很有趣的事情,来证明你可以通过直线程序,来做很多功能，但是你也看到我们之前讲过的了，这不太有趣。

麻省理工公开课 - 计算机科学及编程导论课程节选

It gives us the power to have complete dynamism in our program.

它在我们的程序中，起着动态,分配的功能。

哈佛公开课 - 计算机科学课程节选