1. Pulmonary fibrosis is a condition in which lung tissue becomes thickened and stiff over time. （肺纤维化是一种随时间推移肺组织变得变厚和变硬的病症。）
2. Liver fibrosis is a progressive scarring of the liver that can eventually lead to cirrhosis. （肝纤维化是肝脏逐渐产生疤痕组织，最终可能导致肝硬化。）