Under the plans, crews are building railway lines, ports and electric power grids.
根据计划,工作人员正在建设铁路线、港口和电网。
英语百科
Electrical grid
An electrical grid is an interconnected network for delivering electricity from suppliers to consumers. It consists of generating stations that produce electrical power, high-voltage transmission lines that carry power from distant sources to demand centers, and distribution lines that connect individual customers.