- The question can't be lightly dismissed as a fad or a dream.
不可轻率地认为这个问题是一个怪念头或空想而不予考虑。
- His scheme for building a perpetual-motion machine is just a pipe dream.
他建造永动机的计划只是空想罢了。
- Early retirement is a pipe dream for many.
早退是许多人都有的白日梦。
- When I was a child,I used to imagine myself to be a traveler in future,but that was only a day dream of a boy.
孩提时代，我总是想长大后要做个旅行家，不过那只是一个孩子的白日梦而已。
