He is living in exile for political reasons.

He had to wander from his hometown because of the war.

His greatest wish is to travel the world.

He is wishing for world peace.

This protective suit is for protecting oneself from radiation.

This house uses insulation to protect against the cold of winter.

Boy, what are you doing over there?

He dissected a frog in his biology class.

He proceeded with the conversation in an arrogant manner.

I can't stand his arrogant attitude.