the design of buildings or cities in a way that protects them against attack by an enemy

The north gate of the city is another impressive example of defensive architecture. 城的北门是防御性建筑的又一个典范。

the design of public spaces in a way that stops unwanted behaviour

Defensive architecture might include sloped window sills to stop people sitting on them, or benches with armrests positioned to stop people lying on them. 敌意建筑可以包括为防止人们坐在上面而故意倾斜的窗台，或者为防止人们躺在上面而在特定位置加上扶手的长凳。