心理咨询师 招聘:交换律和结合律有什么不同 用英文回答 最好附带翻译

来源:百度文库 编辑:高考问答 时间:2024/05/03 08:07:54

首先,交换律是commutative law, 结合律是associative law. 交换律和结合律各有两种,加法交换律,乘法交换律和加法结合律,乘法结合律。加法是addition, 乘法是multiplication.
接着,我就试试说它们的不同。
To additions, commmutative law means you can change the sequence of the numerals to get the same result(such as: 3+5=5+3), while associative law means you can add any amounts of numerals together first to get the same result[such as: (5+9)+4=5+(9+4)].
翻译:对于加法,交换律是指可以改变加数的顺序进行运算结果不变(如:3+5=5+3),而结合律则是指可以将任意的几个加数先相加结果不变[如:(5+9)+4=5+(9+4)]。
To multiplications, commutative law also means you can change the sequence of the numerals to get the same result(such as: 9*4=4*9),while associative law means when several multiplications with same multipliers will make additions, you can use the addition of the different multipliers times the same multipliers to get the same result[such as: 6*4+6*7=(4+7)*6].
对于乘法,交换律仍意味着可以改变乘数的运算顺序结果不变(如:9*4=4*9),但结合律则指当要把几个拥有相同乘数的乘法运算作加法时,可以用先算出不同乘数的和,再用这个和乘以相同的乘数[如:6*4+6*7=(4+7)*6]。
明白了吗?