2 sentences

1. 大公是我的表亲。

   dà​gōng shì wǒ de biǎo​qīn.

   The Grand Duke is my cousin.

   Source: OpenSubtitles

2. 处理这件事情一定要大公无私。

   chǔ​lǐ zhè jiàn shì​qing yī​dìng yào dà​gōng wú​sī.

   This matter must be handled with complete impartiality.

   Source: Dong Chinese Dictionary