1. 弹性橡胶：gum cotton 火棉 | gum elastic 弹性橡胶 | gum elastic bougie 弹性树胶探条

2. 弹性树胶：gum copal 柯巴胶 | gum elastic 弹性树胶 | gum paper 胶水纸

3. 橡胶,弹性树胶：gum drops ==> 橡皮糖 | gum elastic ==> 橡胶,弹性树胶=>ゴム | gum filler ==> 橡胶填料

noun

1. an elastic material obtained from the latex sap of trees (especially trees of the genera Hevea and Ficus) that can be vulcanized and finished into a variety of products

    Synonym: rubbernatural rubberIndia rubbercaoutchouc