4 sentences

1. 每个人都应该分清公私。

   měi gè rén dōu yīng​gāi fēn​qīng gōng​sī.

   Everyone should draw a clear line between public and private interests.

   Source: Dong Chinese Dictionary

2. 我们应该分清是非曲直。

   wǒ​men yīng​gāi fēn​qīng shì​fēi qū​zhí.

   We should distinguish right from wrong.

   Source: Dong Chinese Dictionary

3. 处理日常事务，必须分清轻重缓急。

   chǔ​lǐ rì​cháng shì​wù, bì​xū fēn​qīng qīng​zhòng huǎn​jí.

   When handling daily affairs, one must prioritize tasks according to their importance and urgency.

   Source: Dong Chinese Dictionary

4. 在进行物理实验时，一定要分清电池的阳极和阴极。

   zài jìn​xíng wù​lǐ shí​yàn shí, yī​dìng yào fēn​qīng diàn​chí de yáng​jí hé yīn​jí.

   When conducting physics experiments, it is essential to distinguish between the anode and the cathode of the battery.

   Source: Dong Chinese Dictionary