By making great effort more twenty years, the titling technology is gradually matured and widely used.

经过二十多年的努力，摆式列车技术逐渐成熟并得到广泛运用。

youdao

By making great effort more twenty years, the titling technology is gradually matured and widely used.

经过二十多年的努力，摆式列车技术逐渐成熟并得到广泛运用。

youdao