dream on 痴心妄想
dream sth away在遐想中虚度
dream sth up 凭空想出,虚构出
dream of/about sth 想象,梦想；做梦,梦见(dream that+clause)
dream a dream 做梦
like a bad dream 噩梦般难以令人相信
go/work like a dream 性能极佳,十分有效；毫无困难
in your dreams 你妄想,你在做梦