| 21. | These apples are not ripe; they are sour . |
| 这些苹果不熟，是酸的。
|
| 22. | The milk smells as if it is sour . |
| 这奶闻起来好像已经酸掉了。
|
| 23. | Sour grapes are made into raisins. |
| 酸葡萄被做成葡萄干。
|
| 24. | I think this milk is sour ; it has a funny taste. |
| 这想这牛奶发酸了;它有一股怪味道。
|
| 25. | Every white hath its black, and every sweet its sour . |
| （谚）有白必有黑，有甜必有苦[事物各有缺陷]。
|
| 26. | taste sour , bitter, sweet, etc |
| 有酸, 苦, 甜等味
|
| 27. | sour gooseberries |
| 酸的醋栗
|
| 28. | a sour smell |
| 馊味
|
| 29. | a sour and disillusioned man |
| 阴郁颓丧的人
|
| 30. | a sour [sweet] apple |
| 酸（甜）苹果
|