This pear tastes a bit sour.

这梨带点酸味。

《新英汉大辞典》

Too much pulp produces a sour wine.

过多的果肉会让酒变酸。

《牛津词典》

The meeting ended on a sour note with several people walking out.

几个人退席，会议不欢而散。

《牛津词典》

For example, one fine chocolate made with cacao grown in Madagascar has a very interesting sour taste.

VOA: special.2010.02.17

He noted that a baked potato is not high in fat, but it becomes fatty when people add sour cream and butter to it.

VOA: special.2011.07.05

Even one very bad experience can sour a person on financial advice forever.

FORBES: Who can manage your wealth for you? Look in the mirror.

It was a deserved straight dismissal, but a sour ending to a game in which the Ghanaian midfielder had earlier demonstrated the qualities Chelsea so badly missed during their 2-0 defeat by Liverpool on Sunday.

BBC: Chelsea 1-0 Fulham

He pairs the seafood with celery leaves and Gueuze, a sour Belgian beer with a hint of citrus.

WSJ: Paul Kahan's Steamed Mussels With Celery Leaves | Slow Food Fast