a closed book

[a closed book]
[a closed book]

中文释义

看不懂的书,天书,专业书

单词分析

单词结构:

a closed book

字母数:13

记忆提示

🎯 重点记忆:

  • 单词拼写:a closed book
  • 核心含义:看不懂的书,天书,专业书