粘度是影响发酸酸奶品质重要指标之一。

Viscosity is an important indicator which influences the quality of fermentation yogurt.

从早上起，他就在执行任务。骑了那么久的摩托车，胳臂和腿部都发酸了。

He had been on the job since morning and after so many hours on his motorcycle his limbs ached.

大部分发达国家的人比较喜欢一种用发酸牛奶制作的牛油，因为它富有风味，而且常常会有鲜草或者焦糖的气味，非常好吃。

More civilised nations prefer cultured butters made from soured milk, which have a delicious, rich flavour, often with elements of fresh grass or caramel.