The most dangerous buildings that we're concerned about are the unreinforced masonry building.

- 我们关注的最危险的建筑是未加固的砖石建筑。

In fact, most of the red tape around apartments comes from the era of dangerous tenement buildings in the 19th century.

事实上， 公寓周围的繁文缛节大多来自19世纪危险的唐楼时代。