old age dependency r

查询英语单词中文释义、音标、发音和例句。

old age dependency ratio
英 [old age dependency ratio]
美 [old age dependency ratio]

中文释义

扶老比

单词分析

单词结构：

old age dependency ratio

字母数：24

记忆提示

🎯 重点记忆：

  • 单词拼写：old age dependency ratio
  • 核心含义：扶老比

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更新时间：2026-09-01 11:08:17