深化 (shēn huà): เพื่อให้ลึก

The leaders of the two countries agreed to deepen economic cooperation and jointly address global challenges.

Through this exchange, we deepened our understanding of each other's culture.

Education reform needs to be deepened to improve students' innovative abilities.

This research deepened our understanding of the impacts of climate change.

They decided to deepen their friendship and keep in touch regularly.