nounAfM中文字网
一. the activity of operating something (a machine or business etc.)AfM中文字网
e.g. her smooth operation of the vehicle gave us a surprisingly comfortable rideAfM中文字网
二. a planned activity involving many people performing various actionsAfM中文字网
e.g. they organized a rescue operation
the biggest police operation in French history
running a restaurant is quite an operation
consolidate the companies various operationsAfM中文字网
三. a process or series of acts especially of a practical or mechanical nature involved in a particular form of workAfM中文字网
e.g. the operations in building a house
certain machine tool operationsAfM中文字网
Synonym: procedureAfM中文字网
四. a medical procedure involving an incision with instruments
performed to repair damage or arrest disease in a living bodyAfM中文字网
e.g. they will schedule the operation as soon as an operating room is available
he died while undergoing surgeryAfM中文字网
Synonym: surgerysurgical operationsurgical proceduresurgical processAfM中文字网
五. (mathematics) calculation by mathematical methodsAfM中文字网
e.g. the problems at the end of the chapter demonstrated the mathematical processes involved in the derivation
they were learning the basic operations of arithmeticAfM中文字网
Synonym: mathematical processmathematical operationAfM中文字网
六. activity by a military or naval force (as a maneuver or campaign)AfM中文字网
e.g. it was a joint operation of the navy and air forceAfM中文字网
Synonym: military operationAfM中文字网
七. a business especially one run on a large scaleAfM中文字网
e.g. a large-scale farming operation
a multinational operation
they paid taxes on every stage of the operation
they had to consolidate their operationsAfM中文字网
八. (psychology) the performance of some composite cognitive activity
an operation that affects mental contentsAfM中文字网
e.g. the process of thinking
the cognitive operation of rememberingAfM中文字网
Synonym: processcognitive processmental processcognitive operationAfM中文字网
九. (computer science) data processing in which the result is completely specified by a rule (especially the processing that results from a single instruction)AfM中文字网
e.g. it can perform millions of operations per secondAfM中文字网
一零. process or manner of functioning or operatingAfM中文字网
e.g. the power of its engine determines its operation
the plane's operation in high winds
they compared the cooking performance of each oven
the jet's performance conformed to high standardsAfM中文字网
Synonym: functioningperformanceAfM中文字网
一一. the state of being in effect or being operativeAfM中文字网
e.g. that rule is no longer in operationAfM中文字网