zhè tiáo / gāo tiě / xiàn lù / kāi tōng / hòu / Jīng Jīn Jì / zhī jiān / wǎng lái / gèng jiā / fāng biàn

这条高铁线路开通后，京津冀之间的往来更加方便。

After this high-speed rail line opened, travel between Beijing, Tianjin, and Hebei became much more convenient.