泡影

泡影 [pào yǐng]

1. ■ visionary hope, plan, scheme, etc.; bubble; naught; zilch:

化为泡影 vanish like soap bubbles; melt into thin air; go up in smoke; come to nothing; end up in smoke;

他们的企图成了泡影。 They were foiled in their attempt.

他们成功的希望已成为泡影。 Their prospects of success have vanished.