Block 5
第5号大厦

建筑群中的一座，如A座、B座等

我想句子开始就提到建筑大楼的名称（UOWD医疗中心），Block 5 是告知医疗中心大楼的位置。如果它有一个地域(界)图(parcel map)，该地图可能会列出地块的区域(界限)，如地块block 1，2，3等... Center 是美式英语，这里Centre是英式英语吗? 请参考以下资料了解我看法的来源。没太大信心,但觉这里的block跟下面讲的block相近。

I found this in wikipedia:
A city block, urban block or simply block is a central element of urban planning and urban design. A city block is the smallest area that is surrounded by streets. City blocks are the space for buildings within the street pattern of a city, they form the basic unit of a city's urban fabric. City blocks may be subdivided into any number of smaller land lots usually in private ownership, though in some cases, it may be other forms of tenure. City blocks are usually built-up to varying degrees and thus form the physical containers or 'streetwalls' of public space. Most cities are composed of a greater or lesser variety of sizes and shapes of urban block. For example, many pre-industrial cores of cities in Europe, Asia and the Middle-east tend to have irregularly shaped street patterns and urban blocks, while cities based on grids have much more regular arrangements.

Use of block as a unit of distance
In North American English the term block is used as an informal unit of distance; for example, when giving directions (e.g. "It's three blocks from here.").

In British English the term is scarcely used to convey a measure of distance due to the lack of 'blocks' in most cities; it is, however, used when making short trips around a nearby road of an estate. (e.g. "I'm taking the dog out for a walk around the block")