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

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

It doesn't matter the sequence in which you add the two vectors.

在做两个矢量的加法时无所谓相加的顺序

耶鲁公开课 - 基础物理课程节选

As Dero says, " "soul grows more by subtraction than by addition", by getting rid of these limitations, limitations that are preventing us from fulfilling our potential.

就像俗话说的那样，“做减法比做加法让灵魂成长得更快，减法包括除去那些，阻碍我们发挥潜能的限制。

哈佛公开课 - 幸福课课程节选