名词
中文翻译：反变元
同义词：
['inverse', 'contrapositive例句：1. In mathematics', 'a contravariant functor is a function that takes values in the opposite category of its arguments.（在数学中，一个反变元函子是一个函数，它接受与其参数相反类别的值。）']
例句：
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1. In mathematics, a contravariant functor is a function that takes values in the opposite category of its arguments.
在数学中，一个反变元函子是一个函数，它接受与其参数相反类别的值。
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2. The contravariant functor for addition is the identity function, which maps each input to thesum of the inputs.
加法的反变元函子是恒等函数，它将每个输入映射到输入的总和。
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3.In this example, the contravariant functor for multiplication is the function that takes two numbers and returns their product.
在这个例子中，乘法的反变元函子是那个将两个数作为输入并返回它们的乘积的函数。