Operator messages may also contain many operands.An operand is defined as a piece of information needed to conduct an operation.It must be placed in the message by the sending service.是什么意思_Operator messages may also contain many operands.An operand is defined as a piece of information needed to conduct an operation.It must be placed in the message by the sending service.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句