Cách sử dụng
The word 'sour' is used to describe a taste that is acidic or sharp. For example, lemons and vinegar are sour because they have a tangy taste. It can also be used to describe a mood or attitude that is unpleasant or negative. For instance, a sour attitude means that someone is being grumpy or negative. Additionally, it can refer to the deterioration or corruption of something, such as spoiled milk that has turned sour.