A gesture by a conductor signaling the entrance of a performer or part.
提示手势指挥示意某一表演者或声部进入时所作手势
A device that produces a bright light for signaling, illumination, or identification.
闪光信号,照明弹一种能产生强光用来发出信号、照明或鉴定物体的装置
The police signalled the traffic to move forward slowly.
警察向来往车辆打信号,示意缓慢前行。