名词
中文翻译：助言器
同义词：
['speech aid', 'speech amplifier']
例句：
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1.This speech aid appliance is designed to help people with speech difficulties.
这款助言设备旨在帮助有言语困难的人。
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2.The speech aid appliance has improved the quality of our communication.
这款助言设备提高了我们的沟通质量。
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3. The speech aid appliance was invented by a man who wanted to help people communicate more effectively.
这款助言设备是由一位想要帮助人们更有效地交流的人发明的。