dummy upvi.闭口不说；拒绝泄露所知情况dummyn.傀儡；假人；仿制品；笨蛋；哑巴adj.假的；仿造的vt.保密dummy factor陷阱系数dummy-gate虚拟栅dummy record假记录,伪记录dummy teaser台畜dummy method虚平衡法dummy screen假掩护dummy winding虚拟线圈dummy roadway石垛平巷dummy reality虚拟现实dummy support支持用金属部件