2 sentences for 干 (gān — to involve)

1. 它们是两个互不相干的世界。

   tā​men shì liǎng​ge hù bù​xiāng​gān de shì​jiè.

   They are two unconnected worlds.

   Source: CCMatrix

2. 这个500年历史的文件是在慕尼黑一家大学图书馆里一本毫不相干的书中找到的。

   zhè​ge500 nián lì​shǐ de wén​jiàn shì zài mù​ní​hēi yī​jiā dà​xué tú​shū​guǎn li yī​běn háo​bù​xiāng​gān de shū zhōng zhǎo dào de.

   The 500-year-old document was found inside an unrelated book in a university library in Munich.

   Source: UM-Corpus: News