Early in the morning, in the Yongan subway station in Beijing, China's first subway line - Beijing Metro line 1 successfully established the first shield door.
清晨,在永安地铁站,中国的第一条地铁线路-北京地铁1号线成功地建立了第一个屏蔽门。
In July 18th, one of the passengers are installing and debugging platform shield door in Beijing Metro Line 1 Yongan station in the past.
今年7月18日,一名乘客在北京地铁1号线永安站的站台屏蔽门安装和调试过去。
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