modernization

The modernization of the national railway system included replacing old steam engines with high-speed electric trains.

(Chinese) 国家铁路系统的现代化建设包括用高速电力机车取代旧的蒸汽机车。

To stay competitive, the factory underwent a complete modernization of its assembly line robots.

(Chinese) 为了保持竞争力，这家工厂对其装配线机器人进行了全面的现代化升级。