名词
中文翻译：记录指示器同义词
同义词：
['recording device', 'recording instrument']
例句：
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1. The engineer used a recording indicator to measure the distance between the two points.
工程师使用记录指示器测量两点之间的距离。
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2. The doctor used a recording indicator to record the patient's vital signs.
医生使用记录指示器记录患者的体征。
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3. The scientist used a recording indicator to capture the sound waves of the earthquake.
科学家使用记录指示器捕捉地震的声波。