名词
中文翻译：无霜区
同义词：
['frost-free zone', 'frost-free area', 'unfrozen zone']
例句：
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1. The region is known for its unfrozen zone during the winter months.
该地区以其冬季的无霜区而闻名。
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2.This region is a popular destination for skiing and snowboarding enthusiasts.
这个地区是滑雪和雪板爱好者的热门目的地。
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3. The scientists are studying the effects of climate change on the unfrozen zone.
科学家们正在研究气候变化对无霜区的影响。