pipe dream

名词 pipe dream:

1. a fantastic but vain hope (from fantasies induced by the opium pipe)
   同义词：dream

1. Political experts say it's a pipe dream for Republicans to win black and other minority votes in any significant numbers in1988, whether the Rev.Jesse Jackson is on the Democratic ticket or not.
   政情专家们说，无论杰克逊牧师是否成为民主党候选人，共和党若想在1988年在黑人或其他少数族裔中得到可观的选票，仍是梦想。