It's sad to see his pure heart being defiled by lies.

My white shirt got dirty with coffee.

The ditch river in this town is dirty and smells terrible.

He accidentally dropped the ball into the drainage ditch.

What is today's topic?

Mr. Wada is my best friend.

Aldehyde is a very important compound in organic chemistry.

I think his behavior is unjust.

I think his actions are completely inhumane.

He was poisoned after eating something.