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单词 alluvium
释义

al·lu·vi·um

noun
/əˈluːviəm/
/əˈluːviəm/
[uncountable] (geology)
  1. sand and earth that is left by rivers or floods冲积层;冲积物
    Word Originmid 17th cent.: Latin, neuter of alluvius ‘washed against’, from ad- ‘towards’ + luere ‘to wash’.
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更新时间:2026/3/10 12:04:22