improve

a course for students wishing to improve their English.为想提高英语水平的学生开设的一门课

The doctors say she is improving (= after being ill )..医生说她正在康复。

You could use the money for improving your home..你可以用这笔钱改善家居。

Many wines improve with age (= get better as they get older )..很多葡萄酒年代越久越香醇。

improve efficiency,提高效率

improve on,改进；对…加以改良

improve in,在…方面有改进

to improve the environment,改善环境

improve upon,vt. 改进

improve the comprehensive quality,提高综合素质

improve the investment climate,改善投资环境