任何在运算式中为0的数字，在结果中就变成1。

Any digit that is a 0 in the expression becomes a 1 in the result.

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任何在运算式中为1的数字，在结果中就变成0。

Any digit that is a 1 in the expression becomes a 0 in the result.

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您可以在运算式中使用运算子符号，呼叫运算子程序。

You call an operator procedure by using the operator symbol in an expression.

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您可以在运算式中使用运算子符号，呼叫运算子程序。

You call an operator procedure by using the operator symbol in an expression.

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