2 sentences

1. 他在大学主修考古专业。

   tā zài dà​xué zhǔ​xiū kǎo​gǔ zhuān​yè.

   He majored in archaeology in college.

   Source: Dong Chinese Dictionary

2. 专家们正在对新发现的古墓进行考古。

   zhuān​jiā men zhèng​zài duì xīn fā​xiàn de gǔ mù jìn​xíng kǎo​gǔ.

   Experts are conducting archaeological work on the newly discovered ancient tomb.

   Source: Dong Chinese Dictionary