名词
中文翻译：Unknown
同义词：
['operator', 'operator', 'operator']
例句：
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1. The mucker operator was responsible for the maintenance of the machinery.
操作员负责维护机械。
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2. The mucker operator had to operate the machine manually.
操作员不得不手动操作机器。
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3. The mucker operator had to operate the machine safely and efficiently.
操作员必须安全且高效地操作机器。