名词
中文翻译：火山灰
同义词：
['pyroclast', 'pyroxenite', 'volcanic ash例句：1. The eruption of the volcano created a thick layer of pyroclastics on the ground.（火山爆发在地面上形成了厚厚的一层火山灰。）2. The scientists collected samples from the pyroclastics to study the composition of the lava.（科学家们从火山灰中收集样本，研究熔岩的成分。）']
例句：
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1. The eruption of the volcano created a thick layer of pyroclastics on the ground.
火山爆发在地面上形成了厚厚的一层火山灰。
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2. The scientists collected samples from the pyroclastics to study the composition of the lava.
科学家们从火山灰中收集样本，研究熔岩的成分。
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3. The pyroclastics were used as a building material in ancient times.
古代人们用火山灰作为建筑材料。