1 sentence

1. 这种疾病的病程通常较长，需要耐心治疗。

   zhè zhǒng jí​bìng de bìng​chéng tōng​cháng jiào cháng, xū​yào nài​xīn zhì​liáo.

   The course of this disease is usually long and requires patient treatment.

   Source: Dong Chinese Dictionary