形容词

及物动词

不及物动词

1. 酸的;酸味的
Something that is sour has a sharp, unpleasant taste like the taste of a lemon.

2. (牛奶)变质的，馊的
Sour milk is milk that has an unpleasant taste because it is no longer fresh.

3. (人)乖戾的，尖酸刻薄的，不友好的
Someone who is sour is bad-tempered and unfriendly.