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单词 Resta
释义

Resta

原声例句
BBC 听力 2016年3月合集

The alliance's secretary-general Jens Stoltenberg said more ships would now operate in Greek and Turkish territorial waters. Resta Pouco reports.

北约秘书长延斯·斯托尔滕贝格表示,将向“希土”领海增派船只。请听雷斯塔·布格的报道。

英语百科

Subtraction

An example problem
Subtraction of numbers 0–10. Line labels = minuend. X axis = subtrahend. Y axis = difference.
Placard outside shop in Bordeaux advertising subtraction of 20% from the price of a second perfume

Subtraction is a mathematical operation that represents the operation of removing objects from a collection. It is signified by the minus sign (−). For example, in the picture on the right, there are 5 − 2 apples—meaning 5 apples with 2 taken away, which is a total of 3 apples. Therefore, 5 − 2 = 3. Besides counting fruits, subtraction can also represent combining other physical and abstract quantities using different kinds of objects including negative numbers, fractions, irrational numbers, vectors, decimals, functions, and matrices.

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