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- The arctic tundra is at the top of the world around the North Pole. 北极冻原是指北极点周边的地区,是世界最高的地方。
- Wilderness forests give way to arctic tundra in the Far North. 原生森林一直延伸到极远的北方始由极地草原取代。
- Longyearbyen has an Arctic tundra climate (see Geography of Norway). 基于其北极圈极北位置,十一月末至二月中为极夜,四月中至八月中为极昼。
- In the Arctic tundra, over-population and a scarcity of food sends lemmings on mass migrations at high speeds. 在北极苔原地区,数量过多和食物缺乏导致大量的旅鼠快速迁徙。
- Oil, for example, even when buried under hundreds of feet of environmentally protected Arctic tundra. 在环境尚未破坏的极地苔原,他们嗅到了埋藏地下几百英尺深处传来的石油芬芳;
- The spectacular red fox can be found in North America from the Arctic tundra to the mid-central and eastern U. 美丽的红狐狸是世界上分怖最广的肉食动物,牠们的分怖范围遍及北美洲,由北极冻原是一路延伸到美国的中部及东部。
- The Phoenix's 90-day mission is to analyse the soils and permafrost of Mars' arctic tundra for signs of past or present life. 为了找寻曾经或者现在的生命迹象,凤凰号90天的工作需要分析火星的土壤和冻土层。
- Other examples are floodplains,which receive excess water during heavy rains and floods,and the wet arctic tundra in summer. Some wetland are huge;others are small. 其他的例子是冲积平原,其中接收多馀的水在大雨和洪水和湿北极苔原在夏季。有些湿地是巨大的,其他都是小。
- Musk oxen. Males stand 5 feet at the shoulder and weigh a massive 800 pounds. Aside from polar bears, they are the largest animals that roam the Arctic tundra. 麝香牛。公麝香牛站立时肩高5英尺,体重800磅。除了北极熊外,它们是漫游在北极苔原上的体型最大的动物。
- The process of gathering fossil fuels and other natural resources can be devastating to the sensitive wildlands( such as the tropical rainforests, the Arctic tundra, and coastal marshes) from which they come. 采集石油和其他一些自然资源的过程会对这些资源所来自的脆弱的自然生态环境(热带雨林,北极苔原和沿海的沼泽湿地)来毁灭性的影响。
- Bryoflora of the alpine tundra of Changbai Mountain and its floristic relationship to the bryofloras of arctic tundras. 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.
- I have never seen an arctic bear. 我从未见过北极熊。
- Sled pulled by dog is in common use in the Arctic. 狗拉的雪橇在北极地区很常用。
- We can't stand this arctic weather. 我们受不了这种严寒的天气。
- Nitrogen Bio-Cycle in the Alpine Tundra Ecosystem of Changbai Mountain and Its Comparison with Arctic Tundra 长白山高山冻原氮素生物循环及与北极冻原的对比
- Role of Vegetation and Climate in Permafrost Active Layer Depth in Arctic Tundra of Northern Alaska and Canada 植被和气候对阿拉斯加和加拿大北部北极苔原地区多年冻土活动层厚度的影响
- I guess there are much less people in the Arctic regions than here. 我想北极地区的人要比这里的少得多。
- These birds are able to survive the perils of the Arctic winter. 这些鸟能在北极寒冷的冬天里生存。
- She asked me many questions about my adventures in the Arctic. 她问了我许多有关我在北极探险的问题。
- Scientists think that the Arctic is endangered by pollution. 科学家们认为北极面临着被污染的危险。