名词
中文翻译：机器类
同义词：
['mechanical classes', 'machinery classes']
例句：
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1.The machine classes are responsible for maintaining the school's infrastructure.
机械类负责维护学校的基础设施。
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2.The new machine classes have been designed to improve efficiency and productivity.
新的机械类设计旨在提高效率和生产力。
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3. The machine classes were organized by the school administration to ensure student safety.
机械类由学校管理层组织，以确保学生的安全。