up-and-down test

英 [up-and-down test]
美 [up-and-down test]

中文释义

升降试验

单词分析

单词结构：

up-and-down test

字母数：16

记忆提示

🎯 重点记忆：

  • 单词拼写：up-and-down test
  • 核心含义：升降试验

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更新时间：2026-02-02 23:38:30