You might need some sugar on the rhubarb - it's a little tart.大黄茎上可能要加点糖——这东西有点儿酸。Add some sugar to the stewed apple-it's still a little tart.往炖的苹果里加点儿糖 - 它还是有点儿酸。These apples are a bit tart.这些苹果有点儿酸。The beer tasted slightly sour.这种啤酒喝起来有点儿酸。I find this wine a little sour.我觉得这葡萄酒有点儿酸。