Sparks and smoke were seen coming from an empty train in Shanghai. The incident was caused by a power supply failure that led to a short circuit, according to the metro company.
在上海，人们看到一辆空火车冒出火花和烟雾。 据地铁公司称，这次事故是由供电故障导致短路引起的。
Sparks and smoke were seen coming from an empty train in Shanghai. The incident was caused by a power supply failure that led to a short circuit, according to the metro company.
在上海，人们看到一辆空火车冒出火花和烟雾。 据地铁公司称，这次事故是由供电故障导致短路引起的。