know something backward and forward

[know something backward and forward]
[know something backward and forward]

中文释义

[网络] 了如指掌

单词分析

单词结构:

know something backward and forward

字母数:35

记忆提示

🎯 重点记忆:

  • 单词拼写:know something backward and forward
  • 核心含义:[网络] 了如指掌