arctic tree line
常見例句
- A treeless area between the icecap and the tree line of Arctic regions, having a permanently frozen subsoil and supporting low-growing vegetation such as lichens, mosses, and stunted shrubs.
苔原北極地區(qū)冰蓋和喬本植被線之間的無樹地區(qū)，有永凍底土，并支撐低的植物，如苔蘚、地衣和發(fā)育不全的灌木。
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