名词
中文翻译：联合勤务
同义词：
['joint service', 'joint logistics']
例句：
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1. The military has implemented a new system of joint service to improve efficiency.
军队实施了一种新的联合服务系统以提高效率。
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2. The joint service provided by the army and the air force is crucial for national defense.
军队和空军提供的联合服务对于国防至关重要。
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3. The joint service personnel are responsible for maintaining the security of the country'sborders.
联合服务人员负责维护国家的边境安全。