a persistent or desperate hope that is unlikely to be fulfilled
渺茫的希望; 不可能实现的愿望。
[ORIGIN: mid 16th cent.: from Dutch verloren hoop 'lost troop', from verloren (past participle of verliezen 'lose') and hoop 'company' (related to HEAP). The phrase originally denoted a band of soldiers picked to begin an attack, many of whom would not survive; the current sense (mid 17th cent.), derives from a misunderstanding of the etymology.]