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 heat coil空热线圈dummy appraisal虚拟评价dummy actuality虚拟现实dummy electrode假电极dummy cartridge假弹, 练习弹dummy apparatus虚拟仪器dummy statement空语句dummy indicator等效指示器dummy procedure哑过程dummy file name伪文件名