A man and two women are walking down a wooded path, the man is pushing a young child in a three wheel carriage.
A man and a pair of women are walking down a wooden path, with the man is pushing a young child in a three wheel carriage.
A man is walking and pushing a young child so he must be using a carriage.
A pair is a synonym for the number two
The group of people described, are walking down a wooded path, the man is pushing the three wheel carriage.