treeingn.树枝状组织；植树动词tree的现在分词形式.treen.树；树状物tree-ring width index树轮宽度指数Tree Shade at the beach海滩树阴trees species selection树种选择trees laden with apples果实满枝的苹果树tree searching language树检索语言tree-planting machine植树机tree structured network树结构网络tree - like structure树形结构tree grammars inference树状文法推断trees heavy with apples挂满苹果的树