名词
中文翻译：塞夸斯特拉
同义词：
['sediment', 'sedimentary rock']
例句：
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1.The ancient city was buried under a layer of sequestra for centuries.
这个古城被沉积物覆盖了数百年。
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2. Sediments are formed when water and minerals mix together.
沉积物是由水和矿物质混合形成的。
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3.The team spent months analyzing the sequestra to understand its potential impact on the environment.
团队花了数月时间分析沉积物，以了解其对环境的潜在影响。