proto-planetary nebu
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proto-planetary nebula
英
[proto-planetary nebula]
美
[proto-planetary nebula]
中文释义
原行星状星云
单词分析
单词结构:
proto-planetary nebula
字母数:22
记忆提示
🎯 重点记忆:
- 单词拼写:proto-planetary nebula
- 核心含义:原行星状星云
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更新时间:2026-09-01 22:45:59