The one who stubbornly goes to the goal is always a championThe one who stubbornly goes to the goal is always a champion
I am a guest at the mountains, at the very top of oneI am a guest at the mountains, at the very top of one
In winter, at dawn in the open air, how good it is to meet a loved oneIn winter, at dawn in the open air, how good it is to meet a loved one
Без других, в отдельности. Тот же самый, тожественный. Единый, целостный. Число, цифра и количество 1. Какой-то, некий. Только, исключительно. Какой-нибудь в ряду сходных.