男士们和女士们各自排成一排 跳舞开始时，依次从男队和女队的队头上各出一人配成舞伴。 若两队初始人数不相同，则较长的那一队中未配对者等待下一轮舞曲。-Assuming at the weekend party, men and ladies entering the ballroom, each lined up.             When dancing began, followed by men s