sell a pig in a poke 挂羊头卖狗肉buy a pig in a bag 没有仔细看货就买下来,盲目答应when pigs fly 决不,决不可能pigs might fly 除非出现奇迹what can you expect from a pig but a grunt. 狗嘴里吐不出象牙来
Pigs might fly.绝不可能。Please the pigs如果运气好的话in a pig's whisper 低声地;顷刻间teach a pig to play on a flute教猪吹笛,做荒谬事 bring one's pigs to a fine market卖得吃亏,失算buy a pig in a poke (未见实物而)瞎买东西drive one's pigs to market 打鼾live like pigs in clover 生活优裕,养尊处优