Ping TangPing Tang 35322 Gold badges66 silver badges1515 bronze badges 1 one "One particular" attracts additional awareness to this unique characteristic, though also suggesting that you might (or giving you the option to) discuss other features afterwards. To paraphrase, 1 can make the attribute "additional Specific". We use plural nouns https://vodemcasa.com/one-tv-p2p-paga-melhor