电极性的

例句：

1. 1. The polar bears are known for their unique black fur.
   北极熊以其独特的黑色皮毛而闻名。
2. 2. The Arctic Ocean is the world's largest polar ice cap.
   北冰洋是世界上最大的极地冰盖。
3. 3. Polar bears live in the coldest parts of the Arctic.
   北极熊生活在北极的最冷地区。