noun 下载 🔗分享 乌莱树,橡胶树 A Mexican and Central American tree (Castilloa elastica and C. markhamiana), related to the breadfruit tree, whose milky juice contains caoutchouc. Examples : "The indigenous people carefully tapped the ule tree to collect its milky latex, which they used to make rubber balls. " 当地土著人小心翼翼地割开乌莱树(橡胶树),收集其乳白色的汁液,并用这些汁液制作橡胶球。 plant material substance nature biology agriculture 与AI对话词汇游戏阅读练习