领导正在对项目进行考察。

Lǐngdǎo zhèngzài duì xiàngmù jìnxíng kǎochá.

The leaders are inspecting the project.

学生们参加了社会考察。

Xuéshēngmen cānjiāle shèhuì kǎochá.

Students participated in a social investigation.

他们组织了一次实地考察。

Tāmen zǔzhīle yīcì shídì kǎochá.

They organized a field investigation.