| 短语 | in operation |
| 释义 | in opeˈrationworking, being used or having an effect工作中；使用中；有效The system has been in operation for six months.这个系统已经运行六个月了。Temporary traffic controls are in operation on New Road.新路正在实施临时交通管制。in operation运转着;生效：Our engineer has worked out a plan to raise the output，it will be in operation after our director’s ratification.我们工程师已经制定出一个增产计划，该计划等我们厂长批准以后即将实施。 |
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