gum rosin 松香gum resin n. [林] 樹膠脂gum pink rubber [經(jīng)濟(jì)學(xué)]肉色樹膠gum olibanum gum myrrh gum lancet [醫(yī)藥科學(xué)]牙齦切除刀gum lac gum labdanum gum kino gum gingiva [醫(yī)藥科學(xué)]牙齦gum eraser 橡皮gum elemi gum elastic catheter [醫(yī)藥科學(xué)]橡皮導(dǎo)管gum elastic bougie [醫(yī)藥科學(xué)]彈性樹膠探條gum elastic gum dammar gum copal gum confection [經(jīng)濟(jì)學(xué)]膠姆糖gum boot gum boil