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1·Two subtractions generate the main facade.

两个削减产生了主立面。

2·I will teach him additions and subtractions in math.

我还会教他做数学的加减法。

3·Simple additions and subtractions can help reduce the risk.

正确地选择食物，会减少罹患疾病的风险。

4·Subtractions from the screen create apertures for views and entries.

从屏风上运用减法的方式创建孔洞，用于视线和出入口设置。

5·We're going to learn the tricks of additions and subtractions in this class.

为了提高计算速度，我们今天来学习一些加减法的简便运算。（板书课题）

6·They didn't make big roster additions or subtractions this summer, but they didn't need to.

今夏他们没有重大引援或减员，但他们也不需要那么做。

7·You have completed all of the additions and subtractions to the layout form for a project or proposal.

您已经完成了一个或者提议布局表格的添加或者删除工作。

8·BCD number conversion realizes the conversion from binary system to decimal system by consecutive subtractions.

十进制转换模块采用了连减法，实现了二进制数向十进制数的转换；

9·From research LABS around the world, simple additions and subtractions that just might result in a healthier life.

从来自世界各地实验结果表明，通过简单的增加或减少某些成分，就可让你拥有健康的生活和身体。

10·They generally do well in additions and subtractions of numbers short than 20, but few knew what multiplication or division is.

同学们对20以内数的加减法掌握较熟，而大部分都不知乘除为何物。

(1)digital subtraction angiography数字减影血管造影；数字减影血管造影术