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virgin coal seam
virgin coal seam
英
[virgin coal seam]
美
[virgin coal seam]
中文释义
[矿业] 原煤层
单词分析
单词结构:
virgin coal seam
字母数:16
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🎯 重点记忆:
单词拼写:virgin coal seam
核心含义:[矿业] 原煤层
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drum washer
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更新时间:2026-01-08 14:02:12