我最近切除了阑尾.I have recently had my appendix removed.严重的感染可能导致阑尾穿孔.A severe infection may cause the appendix to rupture.上个月他因患阑尾炎而切除了阑尾.He had his appendix removed last month because of appendicitis....
Preventers are usually brown, red or orange inhalers.这些预防类药物通常是褐色, 红色或者橙色的.How can we improve engines, inhalers, and extinguishers?我们怎样改进引擎 、 喷雾器和灭火器?...