sub·trac·tion
noun/səbˈtrækʃn/
/səbˈtrækʃn/
[uncountable, countable]- the process of taking a number or amount away from another number or amount
减；减去 - The children are tested on basic addition and subtraction.
孩子们接受基本的加法和减法测试。
- The children are tested on basic addition and subtraction.