tundra

英/ ˈtʌndrə /

美/ ˈtʌndrə /

TOEFL/SAT/

1
冻土层
冻土层（Tundra），亦作冻原或苔原，在自然地理学指的是由于气温低、生长季节短，而无法长出树木的环境；在地质学是指0℃以下，并含有冰的各种岩石...
2
坦途
...可以算美式皮卡中的后起之秀，其实早在1993年时丰田就已经向美国皮卡市场发起冲击，只不过是以失败告终。现在为国人所熟知的坦途(TUNDRA)是丰田公司于2000年重新在美国市场推出的产品。在皮卡市场非常成熟的美国，丰田另辟蹊径，在皮卡舒适性上大做文章。
3
[地理] 冻原
...》1990年04期 Journal of Integrative Plant Biology 长白山高山冻原苔藓植物区系及其与北极冻原苔藓植物区系的关系冻原(tundra)是分布于北半球森林线与雪线之间,以北极或北极一高山植物区系成分为主的,由低矮灌木、草本植物、苔醉、地衣构成的一种植被类型。
4
[生态] 苔原
苔原(Tundra)是北半球森林界线以北无林的自然景观类型，它呈环球带状分布在欧亚大陆和北美大陆北冰洋的沿岸地带及其附近的岛屿上。

短语

1
The Tundra Times, a weekly newspaper in Alaska, ceased publication this week.
阿拉斯加的周报——《苔原时报》于本周停刊。
《柯林斯英汉双解大词典》
2
Shrubs are increasing in the "tundra".
“苔原”上的灌木越来越多。
3
Tundra is flat land with very little vegetation.
苔原是平坦的土地，植被稀少。

Tundra
In physical geography, tundra is type of biome where the tree growth is hindered by low temperatures and short growing seasons. The term tundra comes through Russian тундра from the Kildin Sami word tūndâr "uplands", "treeless mountain tract". There are three types of tundra: arctic tundra, alpine tundra, and Antarctic tundra. In tundra, the vegetation is composed of dwarf shrubs, sedges and grasses, mosses, and lichens. Scattered trees grow in some tundra regions. The ecotone (or ecological boundary region) between the tundra and the forest is known as the tree line or timberline.

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