The examples -- a simple calculator and a program to parse e-mail messages -- are simple enough.

这两个例子 —— 一个简单的计算器和一个解析电子邮件消息的程序，都很简单。

youdao

This program has no programming capability built in and is intended to be used as a simple symbolic math calculator.

此程序没有内置的编程功能，旨在用作简单的符号数学计算器。

youdao

Now you'll Tcl your desktop with a more complex GUI program: a scientific calculator written in a mere 50 lines of code (see Listing 2).

现在，您将通过一个更加复杂的Tcl GUI程序来组织桌面：通过仅50行代码编写的一个科学计算器(请参见清单2)。

youdao

You can bring any calculator you want, we don't actually have restrictions for calculator types here, but what you can't do, is you can't program any relevant chemical or information about constants in there.

你可以带你想用的任何一种计算器，我们并不限制计算器的类型，但是有一点是不允许的，那就是你不能使用编程的功能来记录,相关的化学常数或其它信息。

麻省理工公开课 - 化学原理课程节选