walk-up apartment

基本解释

The man who makes the most coveted art in India lives in a small fourth-floor walk-up apartment in a crowded, unremarkable suburb.
他的作品在印度最令人垂延，而他却只是住在闹市中一栋四层高而且没有电梯的、难以引人注意的小公寓里面。
blog.sina.com.cn
The dinosaur skull was advertised as "perfect for a New York City apartment, " though with a starting bid of $100,000, it was clear that the apartment in question was not, say, a studio in a walk-up.
你所看到的这个恐龙头骨化石虽然开拍价是100，000美元，但它的广告内容却是“摆在纽约公寓，再完美不过”。毋庸置疑，这玩意一定不是像普通楼房里的工作室那样的地方能摆放得起的。
blog.sina.com.cn

After ten months of Lokomat training and other rehab, she can walk five blocks with a cane and plans to move back into her third-floor walk-up apartment this month.
FORBES: To Walk Again
These premises, plus the hangarlike 11, 000-square-foot workspace Wilner maintains for his brigade of restorers in Long Island City, are a far cry from the walk-up apartment where he first lived and sold frames back in 1983.
FORBES: The Frame Game