树屋是建立在树枝间，或者靠近一株或几株成熟树木树干的建筑，高出地面。
Tree houses are buildings constructed among the branches or next to the trunk of one or more mature trees, and are raised above the ground.
美洲的一种热带树（沙盒树沙箱树属） ，具有刺激性的浆液、多刺的树干和大的木质蒴果，果实成熟后裂开时发出很大的响声。
A tropical American tree (Hura crepitans) having an irritating milky juice, a spiny trunk, and large woody seed capsules that split explosively when ripe.
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