Early computers did nothing but compute: adding, subtracting, multiplying, and dividing.
早期的计算机只能做加减乘除运算。It is about combinatorial estimates associated with arithmetic operations (addition, subtraction, multiplication, and division).
这是一门评估算术运算（加减乘除）组合规模的学科。For almost as long as Juanita could remember, adding, subtracting, multiplying, and dividing seemed as easy as breathing, and as natural.
在胡安妮塔的记忆中，加减乘除对自己来说早就是如同呼吸一样简单而自然了。In offices there are slide rules for multiplication and division , and desk machines which can add, subtract, multiply and divide .
在办公室里有能做乘法除法的计算尺，以及能加减乘除的台式计算机。d. Our class learns the law of four operations .
我们班在学习加减乘除四则运算。Among the small, Math calculations, this is really boring.
加减乘除之中的小小算计，这真是无趣。Seeing love as food. Marriage isn't love but the combination of other conditions.
把爱情当粮食。婚姻不单单意味着爱情，它是各种条件加减乘除后的产物。Marriage isn't love but the combination of other conditions. Though it's sharp, it's true.
婚姻不单单意味着爱情，它是各种条件加减乘除后的产物。这话听起来挺薄情，但事实如此。Do you know the signs for add, subtract, multiply, and divide?
你知道加减乘除的符号吗？