the level of acid in substances such as water, soil, or wine (水、土壤或酒的)酸度 ■such a level in the gastric juices, typically when excessive and causing discomfort 胃酸浓度(尤指过多造成不适)
bitterness or sharpness in a person's remarks or tone (人的话语或口吻)尖刻,尖酸 the cutting acidity in his voice. 他语气中带的尖酸。