我们用电脑取代了老式的加法计算器。

We 've replaced the old adding machine with a computer.

youdao

我们用电脑取代了老式的加法计算器。

We've replaced the old adding machine with a computer.

youdao

为什么用加法计算？

Why did you use addition ?

youdao

You might recall from grade school sometimes you put things in parentheses so that your addition happens first, then your multiplication, otherwise multiplication would happen by default first.

你们可能会想起小学时，将一些加法表达式,放在圆括号里，这样加法可以先计算，然后是乘法，否则，乘法默认先发生。

哈佛公开课 - 计算机科学课程节选

This is when the addition gets very publically awkward so.

这时候还在做加法计算,当众出丑了吧。

哈佛公开课 - 计算机科学课程节选