名词
中文翻译：主光
同义词：
['main light', 'principal light例句：1. The main light in the room was off.（房间里的主要灯光熄灭了。）2. The principal light of the building is located on the top floor.（大楼的主要光源位于顶层。）3. The main light was switched on when we arrived at the hotel.（我们到达酒店时，主要灯光被打开了。）']
例句：
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1. The main light in the room was off.
房间里的主要灯光熄灭了。
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2. The principal light of the building is located on the top floor.
大楼的主要光源位于顶层。
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3. The main light was switched on when we arrived at the hotel.
我们到达酒店时，主要灯光被打开了。