Acds are chemcal compounds that, n ater soluton, have a sharp taste, a corrosve acton on metals, and the ablty to turn certan blue vegetable dyes red.

• 酸是一种化合物，它在溶于水时具有强烈的气味和对金属的腐蚀性，并且能够使某些蓝色植物染料变红。