城市中没有固定住房的人floaters(plural); people who have no fixed home

• 京城飘族租房完全手册。

  A comprehensive handbook to renting accommodation in Beijing for people with no fixed homes.

• 假如自己只是飘族，随时会飞来飞去，买房当然没有必要。

  If one is a "floater", who may come and go at any time, then of course there is no need to buy a house.