In this case, the exponentiation operator is another form of binary operator so the existing BinaryOp case class serves.
在本例中，求幂运算符是另一种形式的二进制运算符，所以使用现有BinaryOp case类就可以。
A UML operation representing a binary operator is named similarly to unary operator, but the symbol is one of the binary operators.
表示双目运算符(binary operator)的UML操作的命名方式类似于单目运算符，但符号是双目运算符之一。
When a binary operator is overloaded, the corresponding assignment operator, if any, is also implicitly overloaded.
重载二元运算符时，也会隐式重载相应的赋值运算符(如果有)。
Delegate types also provide a binary + operator, which performs delegate concatenation.
委托类型也提供二元+运算符，该运算符执行委托串联。
Delegate types also provide a binary + operator, which performs delegate concatenation.
委托类型也提供二元+运算符，该运算符执行委托串联。
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