I'm using the penthouse's Wi-Fi network as a sort of passive radar system to image the building floor by floor.

我把顶层的无线网络当作无源雷达系统，逐层绘制大楼地形。

youdao

Nearby is the 563-room Shangri-La, an ultramodern marble and glass tower hotel offering equally expansive rooms and views, free wi-fi, and a bar on the 36th floor with a very popular happy hour.

BBC: Business trip: Sydney