T: 系統 S: 系统 [xi4 tong3] = system
這棟建築物本身有獨立的供電系統。
这栋建筑物本身有独立的供电系统。
zhe4 dong4 jian4 zhu2 wu4 ben3 shen1 you3 du2 li4 de5 gong1 dian4 xi4 tong3.
The building has its own independent power supply.
https://www.learnwitholiver.com/chinese/daily-sentence-3571