名词短语
中文翻译：运行状态
同义词：
['operational state', 'operational condition']
例句：
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1. The machine is in a state of operation.
这台机器正在运行。
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2. The system is operating normally.
系统正在正常运行。
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3. The engine was in a state of operation when the car broke down.
汽车出故障时，发动机仍在运行。