名词
中文翻译：Unknown
同义词：
['office phone switchboard', 'office telephone switchboard', 'desk telephone switchboard']
例句：
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1. The desk switchboard is the first point of contact for all incoming calls.
办公桌电话交换机是所有来电的第一个接触点。
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2. The desk switchboard was designed to provide a secure and efficient way to handle incoming calls.
办公桌电话交换机被设计为提供一种安全且高效的处理来电的方式。
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3. The desk switchboard has been upgraded to include more advanced features such as voice recognition and auto-attendant systems.
办公桌电话交换机已经升级，包括更多的高级功能，如语音识别和自动应答系统。