How do I adjust the light level in this room?

He adjusted the light levels of the lamp to change the atmosphere of the room.

His way of speaking is affected, lacking in naturalness.

He is fighting against illness.

This road is dangerous, so please walk carefully.

I guided him to the art museum.

We will use ammonia in this experiment.

This town is very peaceful.

His face showed a peaceful expression.

Ankara is the capital of Turkey.