4 sentences

1. 江山易改，本性难移。

   jiāng​shān yì gǎi, běn​xìng nán yí.

   A leopard cannot change its spots.

   Source: Dong Chinese Dictionary

2. 那不是她的本性。

   nà bù shì tā de běn​xìng.

   It's not in her nature.

   Source: OpenSubtitles

3. 这种野兽本性凶恶，经常在夜间袭击牲畜。

   zhè zhǒng yě​shòu běn​xìng xiōng'è, jīng​cháng zài yè​jiān xí​jī shēng​chù.

   This beast is naturally ferocious and often attacks livestock at night.

   Source: Dong Chinese Dictionary

4. 追求利润是资本的本性。

   zhuī​qiú lì​rùn shì zī​běn de běn​xìng.

   The pursuit of profit is the nature of capital.

   Source: Dong Chinese Dictionary