possessing a highly sensitive or discerning palate

美食家的嘴尖，汤里少放了一点作料他都能尝出来。

being fastidious or fussy about the food one eats

这孩子嘴尖，不新鲜的鱼他一口也不吃。

having a sharp, biting, or sarcastic way of speaking

她为人嘴尖，说话总是不给别人留情面。