词汇	black-and-white signal
释义	black-and-white signal 黑白信号
随便看	internal jet pump internal jetting internal job processing internal journal Internal Journal of Paediatric Dentistry internal jugular internal jugular central venus catheterization internal jugular phlebectasia internal jugular pressure internal jugular v internal jugular vei internal jugularvein internal jugular vein Internal jugular vein cannulation internal jugularveinline internal jugular vein puncture internal jugular vein punctures internal jugular veins Internal jugular venous catheter internal junction station internal labor force internal labor market internal labor markets internal labour division internal labour market