名词
中文翻译：记录器
同义词：
['recorder', 'tape recorder', 'cassette recorder']
例句：
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1. Theengineer used a recorder to capture the sound of the waterfall.
工程师使用一个录音机来捕捉瀑布的声音。
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2. The teacher asked the students to play the recorder for the class.
老师要求学生们为全班演奏录音机。
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3.The old man played his recorder every evening and sang folk songs.
老人每天晚上都弹奏他的录音机，唱民歌。