electric fixture of a room

例句：

1. 1. The new lighting system in the office is an electric fixture.
   办公室的新照明系统是一个电灯装置。
2. 2. This electronic fixture is easy to install and maintain.
   这个电子装置安装和保养都很容易。
3. 3. The old light fixture was too dim for the new design.
   旧的灯具太暗，不适合新的设计。