名词
中文翻译：雷
同义词：
['lightning', 'thunderbolt', 'bolt']
例句：
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1. The storm brought with it a sudden rai of lightning.
暴风雨带来了一阵突然的闪电。
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2. He was caught in the rain and had to wait for the rai to pass.
他被雨淋湿了，不得不等待暴风雨过去。
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3. The rai from the storm made it difficult for anyone to see clearly.
暴风雨带来的闪电使人们难以看清。