经过过多的运算操作，暗文将最终变得杂乱无章。
After too many operations, the ciphertexts would eventually become too noisy.
所以这是相等操作符，然而那个单等号是一个赋值运算符。
So this is the equality operator, whereas the single equal sign is the assignment operator.
获取操作数并执行运算。
所有的赋值运算符都返回赋给左操作数的值。
All assignment operators return the value that is assigned to the left operand.
“一元运算符”是一种对单个操作数进行运算的运算符。
A unary operator is an operator that operates on a single operand.
对于比较运算，必须正好提供两个操作数。
For a comparison operation, exactly two operands must be supplied.
对于比较运算，必须正好提供两个操作数。
For a comparison operation, exactly two operands must be supplied.
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