4 sentences for 学问 (xué​wèn — expertise)

1. 翻译是一门学问。

   fān​yì shì yī mén xué​wèn.

   Translation is a scholarly discipline.

   Source: Tatoeba

2. 处理人际关系也是一门学问。

   chǔ​lǐ rén​jì guān​xi yě shì yī mén xué​wèn.

   Handling interpersonal relationships is also a skill in itself.

   Source: Dong Chinese Dictionary

3. 他最近钻进集邮的学问里，每天都在查资料。

   tā zuì​jìn zuān​jìn jí​yóu de xué​wèn lǐ, měi tiān dōu zài chá zī​liào.

   Recently, he has been immersing himself in the study of philately, looking up information every day.

   Source: Dong Chinese Dictionary

4. 作为一名经理，用人是一门非常重要的学问。

   zuò​wéi yī míng jīng​lǐ, yòng​rén shì yī mén fēi​cháng zhòng​yào de xué​wèn.

   As a manager, managing people is a very important skill.

   Source: Dong Chinese Dictionary