名词
中文翻译：极光
同义词：
['aurora', 'auroras', 'polar lights例句：1. The northern lights are a natural wonder that can be seen from the Arctic.（北极光是一种自然奇观，可以从北极看到。）2. Polar bears live in the Arctic and need to hunt for food.（北极熊生活在北极，需要捕猎食物。）']
例句：
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1. The northern lights are a natural wonder that can be seen from the Arctic.
北极光是一种自然奇观，可以从北极看到。
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2. Polar bears live in the Arctic and need to hunt for food.
北极熊生活在北极，需要捕猎食物。
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3.In the summer, polar bears swim in the sea to cool off.
夏天，北极熊会游到海里来降温。