tundras
n.
（多数位于北极圈的）冻土带( tundra的名词复数 );
苔原;
冻原;
寒漠;
例句:
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The company can also produce Tundras in Indiana at a pace of 100,000 vehicles a year.
印第安纳工厂是10万辆.
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Treeless regions found in and around the Arctic, tundras are among Earth's coldest, harshest biomes.
无树地区位于北极圈内及其附近,苔原分布在地球最冷, 最荒芜的生物群落之中.