treeline

noun
🔊/ˈtriːlaɪn/
🔊/ˈtriːlaɪn/
(also tree line)
[singular]
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  1. a level of land, for example on a mountain, above which trees will not grow林线(山上等树木生长的上限)
    • There’s still some snow above the treeline.林木上方仍有雪。
    Topics Geographyc2