How many emergency exits are there per floor?

请问每一楼面有多少紧急出口？

youdao

Spacious entrances welcome both residents and guests, while elevators service two apartments per floor.

宽敞的入口迎接着每一位居民和客人，而电梯服务于每层的两户公寓。

youdao

So plants could be packed tighter, doubling yield per acre, and multiple layers of dwarf crops could be grown per floor.

这样一来，植株就可以排列的更为紧密，每英亩产量也随之翻番，每一层楼内都可以种好几排矮株作物。

youdao

and they have like, honestly 200 people per floor

那里每一层差不多有200人

住宿环境怎样？ - SpeakingMax英语口语达人

Yet inside Borders, I counted about five shoppers per floor, with another five at the coffee bar.

FORBES: Maybe Not So Crazy

Because space is at a premium, flats are the most common, with many buildings of 20 to 30 floors and four units per floor.

BBC: Living in: Hong Kong

Looking around the city's drinking mecca, Ginza, it's easy to see why: The blocks are filled with multistory buildings housing three or four bars per floor.

WSJ: Made Better in Japan