名词
中文翻译：系统维护
同义词：
['maintenance', 'system check-up', 'system repair']
例句：
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1. The computer system needs regular maintenance to keep it running smoothly.
电脑系统需要定期维护，以保持其顺畅运行。
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2. The engineers will perform a system maintenance check before the new software is released.
工程师们在新软件发布前将进行一次系统维护检查。
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3. The company's policy requires regular system maintenance to ensure customer satisfaction.
公司的政策要求定期进行系统维护，以确保客户满意度。