常见例句双语例句As the blackout revealed, the lack of investment to expand electric infrastructure to meet growing demand has stretched the grid to its limits.此次断电事故暴露出美国在扩建电力基础设施方面投资不足，致使日益增长的用电需求令高压输电网不堪重负。superbigcake.com 返回 stretched grid