名词
中文翻译：火山灰
同义词：
['volcanic ash', 'volcanic sinter', 'volcanic dust']
例句：
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1. Thevolcano erupted, and the prozonite cloud covered the sky.
火山爆发了，火山灰云遮住了天空。
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2.The volcanic ash has been deposited in the valley, making it difficult to breathe.
火山灰被沉积在山谷中，使得呼吸变得困难。
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3.The volcanic ash is a significant source of minerals for agriculture.
火山灰是农业的重要矿物来源。