calculus of urethra

例句：

1. 1. The doctor performed a urethral calculus removal surgery on him.
   医生为他进行了尿道结石手术。
2. 2.Urethral calculi can cause significant pain and discomfort during sexual intercourse.
   尿道结石在性交过程中会引起严重的疼痛和不适。
3. 3. Treatment for urethral calculi often involves medication and sometimes surgery.
   治疗尿道结石通常需要药物治疗，有时也需要手术。