名词
中文翻译：发光指示器同义词
同义词：
['light indicator', 'illuminant indicator']
例句：
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1. The luminous indicator on the wall is a great help in finding your way around the room.
墙上的发光指示器在帮助人们找到房间的路线方面起到了很好的作用。
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2. The new luminous indicator has improved the efficiency of our factory's production process.
新型发光指示器提高了我们工厂生产效率。
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3. The luminous indicator was used to indicate when the lights were turned off.
发光指示器被用来标示灯光熄灭的时间。