Are they basic, such a light dimmer, or more imposing, like an alarm system or a video camera?

它们是基础部分（比如说调光器），还是稍高端点儿的（像警报系统或摄像头）？

youdao

Are they basic, such a light dimmer, or more imposing, like an alarm system or a video camera?

它们是基础部分（比如说调光器），还是稍高端点儿的（像警报系统或摄像头）？

youdao