cù / suān / shì / yì / zhǒng / cháng / jiàn / de / ruò / suān / guǎng / fàn / yòng / yú / shí / pǐn / hé / huà / xué / shí / yàn醋酸是一种常见的弱酸,广泛用于食品和化学实验。Acetic acid is a common weak acid widely used in food products and chemistry experiments.