the taste experience when vinegar or lemon juice is taken into the mouth
the property of being acidic
a sullen moody resentful disposition
造句
用作名詞(n.)
A rice wine would reduce sourness if vinegar is added too much in cooking. 做菜時，如果醋放多了，加一點米酒就會調輕酸味。
Sourness is just another word for acidity, Suslick said, which any high school chemistry student can test for using litmus paper. 薩司利克說，酸味只是酸度的另一種表述方式，任何一間中學的化學學生都可以用石蕊試紙進行它的測量。
Yes, too long and intense an acquaintance can lead to sourness. 的確，如此過久而認真的相知可導致壞心眼。