At a physiologic pH of about 7.4, uric acid loses a proton and becomes a urate ion, which then binds sodium and forms monosodium urate crystals.

在生理环境下，体液的pH值约为7.4，此时尿酸会失去一个质子，变为尿酸离子；尿酸离子与钠离子结合，形成单钠尿酸盐结晶。

At a physiologic pH, uric acid loses a proton and becomes a urate ion, which then binds sodium, forming monosodium urate which crystallizes and ultimately forms uric acid stones.

生理PH值下，尿酸失去一个质子变成尿酸盐离子，随之与钠结合，形成单钠尿酸盐，结晶后最终形成尿酸结石。