This substance does not mix with water due to its high hydrophobicity.

This area is rich in subterranean rivers, which serve as a source of groundwater.

We use warm salt water to thaw tuna.

She became a widow at a young age.

This restaurant's special lemon soda is made with fresh lemons.

Who is the main character?

He is a renowned person in that field.

His theory is very interesting.

He is working hard.

He is painting a picture using a brush.