Trapped within each ring are unique concentrations of dust, isotopes and dissolved gases — important clues to the Earth's climate in the distant past. (psmag.com)
«The Empire State Plaza is a unique concentration of great architecture, great art and New York's great place in American history.» (politico.com)
Superfoods are foods and herbs that have a unique concentration of nutrients that synergize together to boost potential. (naturalhealth365.com)