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naturally occurring radioactive substance
naturally occurring radioactive substance
英
[naturally occurring radioactive substance]
美
[naturally occurring radioactive substance]
中文释义
天然放射性物质
单词分析
单词结构:
naturally occurring radioactive substance
字母数:41
记忆提示
🎯 重点记忆:
单词拼写:naturally occurring radioactive substance
核心含义:天然放射性物质
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更新时间:2026-03-18 02:27:27