当加法的和是一个两位数或做乘法和减法时，查尔斯便无能为力。

Sums involving two-digit numbers or multiplication or subtraction were beyond him.

youdao

她准备学习简单的加法和减法。

She's ready to learn simple addition and subtraction.

《柯林斯英汉双解大词典》

该服务是一个简单的数学计算服务，提供了加法和减法运算。

This service is a simple math calculation service, providing addition and subtraction operations.

youdao

But let's suppose that I realize that I'm doing a lot of addition in my programs, and I actually want to factor out what seems to becoming a lot of copy, paste.

但是假如我在程序中做了很多加法,我实际上想要提出那些,复制粘贴的东西。

哈佛公开课 - 计算机科学课程节选

And he quite correctly, because he's more senior than I am, more experienced than I am, said it's actually a good thing.

你可以用加法来加浮点数，他很明显是正确的，因为他比我年长些，比我更有经验些。

麻省理工公开课 - 计算机科学及编程导论课程节选

If you're writing a one line function, whose sole purpose in life is addition, and, clearly, this is about addition, well, then it's, in fact, A reasonable to use a shorter symbol like A, but I do have to specify it's type.

如果你在写一个一行的函数，它唯一的目的是,做加法，显然这是关于加法的，好的，实际上，用一个短的标识符是合理的，像，但是我必须指明它的类型。

哈佛公开课 - 计算机科学课程节选