About 70 percent of facilities, including power supply, monitoring, communication and signal, have been installed along the line and the rest will be finished by the end of this year, the report said.

据北京晚报的报道称，该线路上包括供电、监控和信号系统设施中的70%已经安装完毕，其余部分将在今年年底完成。

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About 70 percent of facilities, including power supply, monitoring, communication and signal, have been installed along the line and the rest will be finished by the end of this year, the report said.

据北京晚报的报道称，该线路上包括供电、监控和信号系统设施中的70%已经安装完毕，其余部分将在今年年底完成。

youdao