名词
中文翻译：谈话铃
同义词：
['conversation bell', 'talking bell']
例句：
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1. The teacher placed the talk-ringing key on the desk tosignal the start of class.
老师把谈话铃放在桌子上，用来表示上课开始的信号。
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2. The student picked up the talk-ringing key and ran out of theclassroom.
学生拿起谈话铃跑出了教室。
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3.The students were discussing their plans for theupcoming project meeting when the talk-ringing key rang.
学生们正在讨论即将到来的项目会议的计划时，谈话铃响了。