說葡萄酸 [ㄕㄨㄛ ㄆㄨˊ ˙ㄊㄠ ㄙㄨㄢ; shuo1 pu2 tao5 suan1] sour grapes (set expr. based on Aesop) lit. to say grapes are sour when you can't eat them ◄ ►