就是补充光线的灯:D

it's a kind of lamps,to provide light compensation for equipment or plants that lack of light.就是用来对某些由于缺乏光照度的设备或植物进行灯光补偿的一种灯具.

補光燈 (攝影用補光燈) : Assistant Exposure Light 用作攝影時的輔助光源