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helderbergian age
helderbergian age
英
[helderbergian age]
美
[helderbergian age]
中文释义
海得贝格期(下泥盆纪)
单词分析
单词结构:
helderbergian age
字母数:17
记忆提示
🎯 重点记忆:
单词拼写:helderbergian age
核心含义:海得贝格期(下泥盆纪)
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更新时间:2026-03-17 19:49:00