She's ready to learn simple addition and subtraction.
她准备学习简单的加法和减法。
We can use the magic of subtraction.
我们可以利用减法的魔力。
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。
The difference is found by subtraction.
用减法得出差额。
In other words, we can use the magic of subtraction.
换句话说，我们可以借助减法的魔力。
When do we use subtraction for current accounts?
在往来帐户中什么时候要用减法呢？
Soul grows more by subtraction than by addition.
做减法比做加法让灵魂成长得更快！
Let's take elementary subtraction as an example.
让我们举简单的减法为例。
Teacher: Today we are going to learn subtraction.
老师：今天我们要学习减法。
Understand that addition and subtraction are inverse.
理解加法和减法是互为逆运算；
Master the method of doing addition and subtraction.
掌握整十数加减法的计算方法。
Mixture Gaussian model is one of background subtraction methods.
混合高斯模型是背景对消中一种非常有效的方法。
Pressing return a couple more times will show an addition and subtraction.
再按两次回车将显示加法和减法表达式。
The quality of the subtraction image is improved by the multi exposure.
采用多次曝光技术，提高了相减象的质量。
The test involves simple calculations, such as addition and subtraction.
测试涉及简单的计算，如加法和减法。
The danger: students who can not even do simple addition and subtraction.
很危险的是，一些先生甚至连复杂的加减法都不会做。
The little boy can already do simple problems in addition and subtraction.
这个小不点孩子都已经会做简单的加减法问题了。
The subtraction of a number from a smaller number yields a negative number.
用一个较小的数字减去一个较大的数字会得到负数。
Addition, subtraction, multiplication and division are all basic operations.
加 减乘除是最基本的运算法则。
We elves never need that. And addition and subtraction and division and fractions?
什么加法，减法，除法，分数，我们从来不用它们。
The mathematics of weight loss is, in fact, quite simple, involving only subtraction.
其实，减肥的数学相当简单，只有减法。
Requires addition, subtraction, multiplication, division a function of the design.
要求加法、减法、乘法、除法各设计一个函数。
The same was true for an addition-subtraction task that measures speed and accuracy.
在测量速度和准确度的加减运算任务中，情况也是如此。
The background subtraction is an important approach in video-based vehicle detection.
背景差法是一种重要的视频车辆检测方法。
What is the difference between the unary minus operator and the binary subtraction operator?
一元操作符负号和二元操作符减号的区别是什么？
ObjectiveTo investigate the application value of DR dual energy subtraction technology in rib lesions.
目的探讨双能减影对肋骨病变的诊断价值。
ObjectiveTo investigate the application value of DR dual energy subtraction technology in rib lesions.
目的探讨双能减影对肋骨病变的诊断价值。
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