deciduous tree of the Amazon and Orinoco Rivers having leathery leaves and fragrant yellow-white flowers; it yields a milky juice that is the chief source of commercial rubber
双语例句
If they could be turned into usable crops, they could outstrip even Hevea. 如果能将它们变成有用的作物，它们甚至会胜过橡胶树。
Commercial rubber comes from the latex of the rubber plants Ficus elastica and Hevea brasiliensis. 商业橡胶来自橡皮树和三叶橡胶树。
