常見(jiàn)例句雙語(yǔ)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(xiàn)之間的無(wú)樹(shù)地區(qū)，有永凍底土，竝支撐低的植物，如苔蘚、地衣和發(fā)育不全的灌木。http://chazidian.com 返回 arctic tree line