1. Chronic gout leads to deposit of urates into a chalky mass known as a "tophus". 慢性痛风导致尿酸盐沉积为似白垩的物质，即痛风石。
2. The particle hardness is suitable for oral health and delaying the formation of dental tophus. 11颗粒硬度适合清洁口腔卫生延缓牙结石形成。
3. Gout is a kind of disease for purin metabolized turbulence. If it reiteration for Long time, it will come into being tophus. 痛风是一种由嘌呤代谢紊乱所致的疾病，日久不愈、反复发作则逐渐形成痛风石沉积。
英英解释
n.
1. a deposit of urates around a joint or in the external ear; diagnostic of advanced or chronic gout
2. an incrustation that forms on the teeth and gums
