Gumu群(姓,日本)gumn.牙床；树胶；齿龈；粘性物质v.搞砸；用牙床嚼；以树胶粘合gummy bottoms胶质脚gum retracion龈退缩gum formation树脂形成,胶结,胶的形成gum separation脱胶gummi arabicum[医] 阿拉伯胶Gum ulceration龈溃疡形成gum inhibiting结胶抑制剂gummer machine锯齿板磨锐机gum bichromate重铬酸盐光敏树胶gum tragacauth黄蓍胶