名词
中文翻译：主机系统
同义词：
['mainframe', 'operating system']
例句：
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1.The new host system is designed to improve efficiency.
新的主机系统旨在提高效率。
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2. The company's mainframe system has been upgraded to support cloud computing.
该公司的主框架系统已升级以支持云计算。
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3. The engineers are responsible for maintaining the host system's security.
工程师们负责维护主机系统的安全性。