The pollution in this area has become a serious problem.

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

My white shirt got dirty with coffee.

We often have picnics by the river on weekends.

Please draw a blue line.

I like his new song.

He sucked up the water in the glass and started running immediately.

This porous whetstone is ideal for sharpening blades.

I feel affection for the cuteness of that puppy.

He is working as my helper.