Their problem was clearly visible to me, a bystander.

Her problem is obvious to me, who is looking at it from an outsider's perspective.

He gave me the cold shoulder.

He was an eyewitness to the incident.

The Atlantic puffin is one of the most commonly seen birds in the North Atlantic.

This ancient proverb, 'know the other side and yourself, and you will not be in danger in a hundred battles', teaches us the importance of understanding ourselves and others.