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