“胆石”造句

胆石通常是在胆囊中形成的.
Gallstones usually form in the gall bladder.

胆石症是由胆汁的成分形成的.
Gallstones are formed from the constituents of bile.

胆石症的发病率随年龄而逐渐增高.
The incidence of gallstones increases progressively with age.

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