daydream

Lost in a daydream, he didn't even notice the teacher calling his name in the middle of class.

(Chinese) 他沉浸在白日梦中，甚至没有注意到老师在课堂上点他的名字。

My favorite daydream is winning the lottery and moving to a tropical island.

(Chinese) 我最喜欢的白日梦是中了彩票并搬到一个热带岛屿。

Stop daydreaming and focus on completing your math homework before dinner.

(Chinese) 别做白日梦了，集中精力在晚饭前完成你的数学作业。

I often daydream about traveling through Europe during long, boring office meetings.

(Chinese) 在漫长乏味的办公室会议中，我经常幻想去欧洲旅行。