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1·With so many variables, it is difficult to calculate the cost.

有这么多的可变因素，很难计算出成本。《牛津词典》

2·It combines quantitative variables and qualitative variables.

它结合了定量变量和定性变量。

3·Most variables and functions should start with a lower case letter.

大多数变量和函数应以小写字母开头。

4·What other variables could be used if the racial concept is thrown out?

如果种族概念被抛弃，还可以使用哪些变量呢？

5·So what other variables could be used if the racial concept is thrown out?

那么，如果种族概念被抛弃，还可以使用哪些变量呢？

6·Put simply, a class is a discrete block or bundle of variables and methods.

简单地说，类是一个由变量和方法组成的离散块或束。

7·When the researchers plugged in a number of other variables, such differences disappeared.

当研究人员加入一些其他变量时，这种差异消失了。

8·Variables included the slope of the land, the ability of the pavement to support the load.

变量包括地面的坡度、人行道的负荷力。

9·Only in research on entirely new treatments are new and unexpected variables likely to arise.

只有在研究全新的治疗方法时，才可能出现新的和意想不到的变数。

10·But when the researchers plugged in a number of other variables, such differences disappeared.

但当研究人员加入其他一些变量时，这种差异消失了。

(1)separation of variables变数分离（法）；变量分离（法）