gum on的用法和样例:
例句
- The pathological formation of patches of gum on certain plants, such as sugar cane and some fruit trees, resulting from attack by insects, microorganisms, or adverse weather conditions.
流胶现象,流胶病某些植物上,如甘蔗及一些果树,形成胶质斑块的病理现象,由病虫害、微生物或恶劣的气候条件侵袭而引起 - Chewing gum on a train is not seemly in a lady.
淑女在火车上嚼囗香糖不太合适。