One Vanderbilt achieves its height by purchasing air rights from a number of surrounding properties and effectively stacking them onto its site.

One Vanderbilt 从周围的许多房产购买空间权，经过层层叠建，形成如今的高度。

It became the tallest residential building in the world, needing plenty of air rights from its neighbors.

它成为世界上最高的住宅楼，需要从邻居那里获得大量的空中使用权。

Developers can transfer or buy the air rights of the lot next door and add them to their own building area.

开发商可以转让或购买隔壁地块的空间使用权，将其添加到自己的建筑面积中。

First, developers have been combining the purchase of air rights with advanced structural engineering – stronger steel and cement – to push buildings to new heights while keeping the footprint small.

首先，开发商一直在将空间权的购买与先进的结构工程（更坚固的钢材和水泥）相结合，以将建筑物推向新的高度，同时保持较小的占地面积。

So if this building isn't making use of all these air rights granted to them by the city, they can sell to this project next door and make a decent buck instead.

因此，如果这座建筑没有使用市政府授予他们的所有这些空气权，他们可以卖给隔壁的这个项目，赚取可观的收入。