An ulcer perforates the duodenal wall.

溃疡使十二指肠壁穿孔。

Once the toxin perforates the host membrane, ions begin to leak out of the cell.

一旦毒素穿孔于宿主细胞膜，离子便开始从细胞中泄漏出去。

The most common surgical treatment in use today perforates the wall of the eye, often resulting in collapse of the eyeball, infection, cataract formation and other complications.

当今最常见的外科治疗是在眼球壁上打孔，这通常会导致眼球塌陷、感染、形成白内障及其他并发症。