名詞 pipe dream:

1. a fantastic but vain hope (from fantasies induced by the opium pipe)
   同義詞：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.
   政情專家們說，無論杰克遜牧師是否成為民主黨候選人，共和黨若想在1988年在黑人或其他少數族裔中得到可觀的選票，仍是夢想。