the medical practice of a solo physician who has barely 1,000 square feet of office space may feel cramped, but he or she can get from the front office to an exam room and back again in mere seconds. on the opposite end of the scale are the physicians who build an expansive practice that features long, wide hallways, spacious exam rooms and physician offices located on a separate floor. in these practices, a walk from the front office to the farthest exam room seems to take 10 minutes. while that facility may look pretty, those extra footsteps gobble many additional minutes a day. and the cost of those extra minutes will add up to real money very quickly, expecially if physicians are the ones who have to make these hikes. ...

다시 한번 질문드립니다. ㅜㅠㅜㅠ 너무 이해가 가질 않아서요 .ㅜㅠ
ones가 가리키는 것이 무엇인지 정확한 답변 부탁드립니다. ^^