improve

The government is investing in new technologies to improve the efficiency of the national power grid.

(Chinese) 政府正投资于新技术，以提高国家电网的效率。

If you want to improve your English speaking skills, you should practice with a native speaker every day.

(Chinese) 如果你想提高英语口语能力，你应该每天和母语使用者一起练习。