名词
中文翻译：Unknown
同义词：
['monitor', 'viewer', 'observer']
例句：
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1.The view finder on the camera is very small and difficult to see.
相机上的取景器非常小，很难看清。
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2.The monitor displayed a message that could not be read.
显示器显示了一条无法读取的信息。
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3. The view finder helped me focus on the subject of the photograph.
取景器帮助我专注于照片的主题。