1514年，荷兰开始使用加号和减号。

Plus and minus signs were used in 1514 in Holland.

youdao

蜜蜂会做加减法——它们用颜色来代替加号和减号。

Bees are capable of addition and subtraction — using colors in the place of plus and minus symbols.

youdao

它能包含变量、常量、运算符，例如加号和减号。

It can include variables, constants, and operating symbols, such as plus and minus signs.

youdao

Most of these are probably self explanatory, addition, subtraction, multiplication, division, and anyone?

其中很多都不需要加以说明的，像加号，减号，乘号，除号和？

哈佛公开课 - 计算机科学课程节选