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child dependency ratio
child dependency ratio
英
[child dependency ratio]
美
[child dependency ratio]
中文释义
扶幼比
单词分析
单词结构:
child dependency ratio
字母数:22
记忆提示
🎯 重点记忆:
单词拼写:child dependency ratio
核心含义:扶幼比
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更新时间:2025-12-20 10:27:12