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单词
treeline, the
释义
treeline, the
NOUN
/ˈtriːˌlaɪn/
1
the level of a mountain above which there are no trees 林木生长线，林木线（指高山上林木生长的上限）
2
the line in the sky made by the tops of a group of trees 一排树冠在天空形成的轮廓