经过过多的运算操作，暗文将最终变得杂乱无章。

After too many operations, the ciphertexts would eventually become too noisy.

youdao

运算数：运算符来进行运算操作的数值。

One of the values on which an operator operates.

youdao

比较便宜的系统在模拟处理器的运算操作时，有可能得到完全不同的信号时间。

Cheaper systems will emulate the processor's operation, but will do so with completely different signal timings.

youdao

So this is the equality operator, whereas the single equal sign is the assignment operator.

所以这是相等操作符，然而那个单等号是一个赋值运算符。

哈佛公开课 - 计算机科学课程节选

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