The aquifer in this area provides a very abundant water source.

My favorite classic novel is Water Margin.

Groundwater pollution has become a serious environmental problem.

I saw various aquatic creatures at the aquarium.

This building is equipped with an impermeable wall, preventing water intrusion.

Since he started his new job, he's been lively as if he were a fish back in water.

This steam is what you see when water vapor cools down.

The European water vole is a small mammal native to Europe.

He crossed many mountains and rivers to meet her.

This ancient proverb, 'know the other side and yourself, and you will not be in danger in a hundred battles', teaches us the importance of understanding ourselves and others.