bare bulb

基本解释

The sunlight filtered through the high, dusty windows and was supplemented by a bare bulb in the ceiling.
阳光透过积着灰尘的高高的窗户射进来，与天花板上一只裸露的灯泡射出的光芒交织在一起。
Outside you could hear the shrill, persistent sound of cicadas, while mosquitoes crowded at the screens, attracted by the bare bulb over the simple desk.
在外面你可以听到尖锐而顽固的蝉鸣声，被办公桌上方的空芯灯泡吸引了过去。
peacherino2009.blog.163.com
The electric bulb socket provides a stable electric power connection of bare wires, simplifies an assembly thereof and enables an electric appliance to be safely grounded.
所述电灯泡插座可提供裸线稳定的电力连接，简化电灯泡插座的组装，并且使得电器可安全接地。
ip.com

It was so bad we left the bare overhead bulb on all night to encourage the cockroaches to stay in the walls.
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