the formation of stones (calculi) in an internal organ
例句
用作名词(n.)
After verifies, causes the famous child to contract the uninary system lithiasis's primary cause is initially in the powdered milk which the baby takes includes the melamine.经初步查明，导致多名儿童患泌尿系统结石病的主要原因是患儿服用的奶粉中含有三聚氰胺。
