| 单词 | in operation |
| 释义 | ● in opeˈration working , 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。See also operation |
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