名词中文翻译
中文翻译：在役的
同义词：
['on-duty', 'in-service', 'active', 'serving']
例句：
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1. The police officer is on-duty at the moment.
警察正在值班。
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2. The soldiers are in-service andready to defend their country.
士兵们正在服役，随时准备保卫国家。
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3. Theaircraft was in-servicefor over a year before itwas retired.
这架飞机服役了一年多后被退役。