self-changing gear

[self-changing gear]
[self-changing gear]

中文释义

自动变速齿轮

单词分析

单词结构:

self-changing gear

字母数:18

记忆提示

🎯 重点记忆:

  • 单词拼写:self-changing gear
  • 核心含义:自动变速齿轮