分分秒秒遵章守纪，列列辆辆安全畅通。

The minute zunzhangshouji, column car safety.

youdao

为了保障安全畅通，长江航运人付出了不懈的努力。

For ensuring safety and unblocked, Yangtze shipping people make unremitting efforts.

youdao

TMIS是铁路运输生产自动化的综合体现，其安全性直接影响铁路运输的安全畅通。

TMIS is an integrated and automated computer system for railway transportation. It can greatly influence the security of railway traffic.

youdao