词汇	to disappoint hopes
释义	to disappoint hopes 使计划受挫
随便看	operator control system or section operator control table operator data register operator-defined occurrence operator-defining occurrence operator delay operator delete operator dial operator dialing working operator dialling working operator difference table operator differential equation operator-differential equation operator display operator display terminal operator display terminal protocol operator-distal operator distance dialing operator distribution operator document Operator does not go backwards operator domain operator dominance operator dominant system operator endomorphism