For these more light-weight methods, architecture documents are more often used as a reflection of the as-built system, rather than as an to-be-designed systems.
对于这些轻量级的方法，架构文档更多地用于反映实际建造的系统，而不是将要设计的系统。
2
The town walls were builtas a defence against enemy attacks.
城墙是为防御敌人袭击而修建的。
《牛津词典》
3
We are thinking of having an extension built, as we now require an extra bedroom.