Nature provides ample evidence of perfect symmetry. Split lengthwise, the two halves of a fruit or vegetable are perfectly identical. When two people are so much alike in appearance, they are uri futatsu.
A: Ano kyoodai wa futatsu chigai da kedo, mattaku uri futatsu da nee. Kono aida, machigaechatte ne. Komatta yo, hontoni!
A: Those brothers are two years apart, yet they’re as alike as two peas in a pod. The other day I mistook one for the other, and was I embarrassed!