The latter poses a particularly serious challenge, as the availability of well-situated land for housing of social interest, at accessible prices is essential for the implementation of a sustainable, quality housing policy.
最后一项方针提出了特别严重的挑战，因为能够按可接受的价格为社会福利住房购得地势好的土地，对于执行可持续的优质住房政策极其重要。