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1·She's ready to learn simple addition and subtraction.

她准备学习简单的加法和减法。《柯林斯英汉双解大词典》

2·There will be simple tests in addition, subtraction, multiplication, and division.

将会有加减乘除的简单测试。《柯林斯英汉双解大词典》

3·We can use the magic of subtraction.

我们可以利用减法的魔力。

4·Not long ago, researches learned that four-day olds could understand addition and subtraction.

不久前，研究人员发现4天大的婴儿能够理解加减法。

5·This service is a simple math calculation service, providing addition and subtraction operations.

该服务是一个简单的数学计算服务，提供了加法和减法运算。

6·Bees are capable of addition and subtraction — using colors in the place of plus and minus symbols.

蜜蜂会做加减法——它们用颜色来代替加号和减号。

7·Most of these are probably self-explanatory, like addition, subtraction, multiplication and division.

其中大多数可能都是不言自明的，比如加法、减法、乘法和除法。

8·Recently, a study showed that bees could perform arithmetic operations like addition and subtraction.

最近一项研究表明，蜜蜂可以进行加减法的运算。

9·I've got one test there, and then I've just got one thing to do here, which has got a subtraction and a multiplication.

我在这里做了一个测试，然后我在这里做了一件事，就是做减法和乘法。

10·It also lets you perform mathematical operations like addition, subtraction, division, and multiplication on two statistics.

它还允许您对两个统计数据执行诸如加、减、乘、除等数学运算。

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