in a dream idiom UK
B2 发呆，出神，走神
not conscious of what is happening around you because other thoughts are filling your mind
I didn't hear what you were saying - I was in a dream. 我刚才没听见你说的话——我走神了。
江苏热线英汉汉英双解词典包含207361条英汉翻译词条，涵盖了常用英语单词及词组短语的翻译及用法，是英语学习的必备工具。