基本解释

• [农业科学]北极树木线北极树线

英汉例句

双语例句

• 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.
  苔原北极地区冰盖和乔本植被线之间的无树地区，有永冻底土，并支撑低的植物，如苔藓、地衣和发育不全的灌木。
  http://chazidian.com

专业释义

农业科学

• 北极树木线
• 北极树线