名词短语
中文翻译：监听器
同义词：
['receiver', 'microphone', 'sound receiver']
例句：
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1. The engineer needs to check the working condition of the listening device before the test begins.
工程师需要在测试开始前检查监听设备的工作情况。
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2. The teacher asked us to listen carefully to the recording and try to identify the speaker's accent.
老师让我们仔细听录音，并尝试辨别说话人的口音。
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3. The new hearing aid is designed to improve our ability to hear in noisy environments.
新型助听器旨在提高我们在嘈杂环境中的听力能力。