词汇	polish stick
释义	polish stick 磨光棒
随便看	signalling safety system SIGNALLING scores of games signalling searchlight signalling security signal l ing security signalling set signalling sign signalling signal system signalling speed signalling strategy signalling switch signal l ing switch signalling system signal l ing system signalling system 7 signalling system a.c signalling system for hydropower station signalling systems signalling technique signalling terminal unit signalling test signalling time slot signal l ing time slot signalling tone peak frequency deviation signalling traffic management