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subtraction

noun
🔊/səbˈtrækʃn/
🔊/səbˈtrækʃn/
 [uncountable, countable]
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  1. 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.对孩子进行基本加法和减法测试。
    compare addition (4)Topics Maths and measurementc1