名词
中文翻译：Unknown
同义词：
['telephone system', 'telecommunications system']
例句：
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1. The new phonesystem is supposed to improve communication efficiency.
新电话系统旨在提高通信效率。
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2.The company's new phone system will be rolled out in the next month.
公司下个月将推出新的电话系统。
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3. The phone system was upgraded to support more users.
电话系统升级以支持更多用户。