tree line
柯林斯词典
1. N the zone, at high altitudes or high latitudes, beyond which no trees grow. Trees growing between the timberline and the tree line are typically stunted 林木线; 指高海拔或高纬度地区树木生长的上限
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1. N the zone, at high altitudes or high latitudes, beyond which no trees grow. Trees growing between the timberline and the tree line are typically stunted 林木线; 指高海拔或高纬度地区树木生长的上限