箕宿和斗宿。箕宿四星,形似簸箕;斗宿六星,形似古代盛酒的斗。当箕斗并在南方时,箕在南而斗在北,因称南箕北斗。-----------------国语辞典:箕星与北斗星。语本《诗经.小雅.大东》:「维南有箕,不可以簸扬;维北有斗,不可以挹酒浆。」比喻徒有虚名而无实用。《魏书.卷六六.李崇传》:「今国子虽有学官之名,而无教授之实,何异兔丝燕麦,南箕北斗哉!」英语 the Winnowing Basket in the southern sky, and the Big Dipper in the north (idiom); sth which, despite its name, is of no practical use