bladder carcinogen的用法和樣例：
例句
- Inorganic arsenic has been documented as a human carcinogen of the skin and lung.
砷已被公認為人類之皮膚和肺的致癌物。 - Recurrent bladder cancers following upper-tract tumors mostly come from intraluminal seeding.The recurrence, progression, and prognosis of the two different tumors were analyzed.
另一個多發性形成的原因是尿液中的致癌物，造成整個泌尿上皮的癌化，形成多個獨立不同來源的腫瘤。
