名词
中文翻译：工作主轴
同义词：
['working spindle', "work shaft例句：1. The machine's working spindle is worn out.（这台机器的工作轴已经磨损了。）"]
例句：
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1. The machine's working spindle is worn out.
这台机器的工作轴已经磨损了。
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2. The car's engine needs to be serviced regularly to keep the working spindle in good condition.
汽车的引擎需要定期保养，以保持工作轴的良好状态。
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3. The engineer carefully adjusted the working spindle of the machine to ensure it worked smoothly.
工程师仔细调整了机器的工作轴，以确保它能够顺畅地工作。