promote促进,发扬,提升,提拔,晋升为
比如：
promote growth [prosperity,understanding]
促进增长[繁荣,了解]
be promoted (to be [to the rank of]) first mate
被提为大副
Several banks promoted the company.
好几家银行创办了这个公司.
The boy was promoted to the fourth grade.
这个男孩升到四年级.
The company are promoting their new products on television.
这家公司在电视上宣传他们的新产品.
improve改善,改进
习惯用法：
improve away 通过改良而去除
improve on 对.加以改进; 作出比.更好的东西
improve upon 对.加以改进; 作出比.更好的东西