The interpreter is going to get a value for it.

处理器会对表达式运算得到一个结果值。

麻省理工公开课 - 计算机科学及编程导论课程节选

Do what you normally do with ordinary numbers.

就按照通常处理数的运算的方法去做

耶鲁公开课 - 基础物理课程节选

And in Python the expression is, operand, operator, operand, when we're doing simple expressions like this, and if I give it to the interpreter, it gives me back exactly what you'd expect, which is that value. OK?

在Python中表达式就是，运算对象，操作符，运算对象，当我们处理这样的简单表达式的时候，我把表达式传给处理器，处理器给我返回了我想要的结果，对不对？

麻省理工公开课 - 计算机科学及编程导论课程节选