sour

名词 sour:

1. a cocktail made of a liquor (especially whiskey or gin) mixed with lemon or lime juice and sugar
2. the taste experience when vinegar or lemon juice is taken into the mouth
   同义词：sourness, tartness
3. the property of being acidic
   同义词：sourness, acidity

动词 sour:

1. go sour or spoil
   同义词：turn, ferment, work
2. make sour or more sour
   同义词：acidify, acidulate, acetify

形容词 sour:

1. smelling of fermentation or staleness
   同义词：rancid
2. having a sharp biting taste
3. one of the four basic taste sensations; like the taste of vinegar or lemons
4. in an unpalatable state
   同义词：off, turned
5. inaccurate in pitch
   同义词：false, off-key
6. showing a brooding ill humor
   同义词：dark, dour, glowering, glum, moody, morose, saturnine, sullen

1. What a sour face she has!
   她的脸色多难看！
2. Most green fruits are sour.
   大多数未熟的水果都是酸的。
3. The hot weather has soured the milk.
   炎热的天气使牛奶变酸了。
4. The old man has been soured by poverty.
   那老人因贫困而变得乖戾了。