"Daydream" 白日梦 用英语表达。
它是一个常见词汇，来源于英语中描述白天漫无目的地梦想或幻想的短语。
例句：
She was lost in a daydream during class. (她在上课时走神了)
He often daydreams about travepng to exotic places. (他经常梦想着去异国他乡旅行)
I daydreamed about winning the lottery all day. (我整天梦想着中彩票)
白日梦是一个常用词，并非专有词，可以在日常语境中使用。