n.口香糖；树胶；黏胶；牙龈vt.& vi.胶合；涂以树胶；使…有粘性； 变形： 过去式：gummed过去分词：gummed现在分词：gumming第三人称单数：gums 双语释义：n.(名词)[P]牙龈 firm pink flesh at the base of the teeth[U]口香糖 a hard transparent jelly-like sweet[U]树胶 sticky substance which oozes from certain trees, used for making