sour/saUr; saʊə/adj 1 having an acid taste, like the taste of a LEMON [ sweet ; → bitter] 酸的﹐有酸味的: sour green apples 酸酸的青苹果see box at见 TASTE1 方框2 milk or other food that is sour is not fresh and has a bad taste and smell〔牛奶等食物〕酸腐的﹐馊的: The milk has gone sour . 牛奶已经变酸了。see box at见 FOOD 方框3 looking unfriendly and angry 不友好的﹐敌意的﹔愤怒的: sour look/face/smile etc The waiter had a really sour expression. 那名侍者脸色非常难看。4 go/turn sourinformal if a relationship or situation goes sour, it becomes less enjoyable or is no longer what you want【非正式】〔关系或情况〕变坏﹐变得令人烦恼[不满意]: As time went on, their marriage turned sour. 随着时间的推移﹐他们的婚姻关系开始恶化。5 sour grapesdisapproving used to say that someone is only pretending to dislike something because they cannot have it【贬】酸葡萄〔因得不到某物而装作不喜欢〕—sourly adv —sour v [I,T]