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fertility ratio
fertility ratio
英
[fertility ratio]
美
[fertility ratio]
中文释义
人口出生率
单词分析
单词结构:
fertility ratio
字母数:15
记忆提示
🎯 重点记忆:
单词拼写:fertility ratio
核心含义: 人口出生率
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更新时间:2026-02-06 07:46:27