2 sentences

1. 他在为这辆旧车寻找买主。

   tā zài wèi zhè liàng jiù chē xún​zhǎo mǎi​zhǔ.

   He is looking for a buyer for this old car.

   Source: Dong Chinese Dictionary

2. 买主是谁？

   mǎi​zhǔ shì shéi?

   Who is the buyer?

   Source: OpenSubtitles