•There are several reactors of the type in operation (= working) at the moment.目前有几个这样的反应堆在工作。

•We expect the new scheme for assessing claims to come into operation (= start working) early next year.我们预计明年初施行核定索赔的新方案。

•Less profitable business operations will have difficulty in finding financial support.盈利较少的企业会很难得到财政资助。

•a military/peacekeeping operation.军事／维和行动

•Following the earthquake, a large-scale rescue operation was launched.地震后发起了一场大规模的救援行动。

•[+ to infinitive] The operation to fly in supplies will begin as soon as possible.向这里空运补给品的行动会尽快展开。

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•a major/minor/routine operation大／小／常规手术

•an abdominal/cataract/transplant operation腹部／白内障／移植手术

•He's got to have an operation on his shoulder.他的肩部必须做个手术。

•[+ to infinitive] We will know in a couple of days if the operation to restore her sight was successful.我们几天后就能知道她恢复视力的手术是否成功。

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