名词
中文翻译：打孔卡系统
同义词：
['punch card system', 'punched card system例句：1. The company uses a punched card system to track employee hours.（该公司使用打孔卡系统来追踪员工的工时。）2. The punched card system was introduced in the 1970s as a way to improve efficiency.（打孔卡系统在20世纪70年代引入，作为一种提高效率的方法。）']
例句：
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1. The company uses a punched card system to track employee hours.
该公司使用打孔卡系统来追踪员工的工时。
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2. The punched card system was introduced in the 1970s as a way to improve efficiency.
打孔卡系统在20世纪70年代引入，作为一种提高效率的方法。
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3.The punched card system has been replaced by more modern technology.
打孔卡系统已经被更现代的技术所取代。