3 sentences

1. 专家们正在对施工现场进行实地踏勘。

   zhuān​jiā men zhèng​zài duì shī​gōng xiàn​chǎng jìn​xíng shí​dì tà kān.

   Experts are conducting an on-site inspection of the construction area.

   Source: Dong Chinese Dictionary

2. 警方正在对案发现场进行勘验，不放过任何线索。

   jǐng​fāng zhèng​zài duì àn​fā xiàn​chǎng jìn​xíng kān yàn, bù fàng​guò rèn​hé xiàn​suǒ.

   The police are conducting a forensic investigation of the crime scene, leaving no stone unturned.

   Source: Dong Chinese Dictionary

3. 这部古籍需要经过仔细的校勘。

   zhè bù gǔ​jí xū​yào jīng​guò zǐ​xì de jiào kān.

   This ancient book needs careful collation and editing.

   Source: Dong Chinese Dictionary