I want to be a business executive.

我想成为一个商业行政主管。

A hotel manager is a business executive.

旅馆经理是业务负责人。

And he has over 20 years of experience as a business executive.

并且，他有近20年商务经理的经验。

He seems more like a military officer than a business executive.

他似乎比较像一个军官，而不像一个商业行政主管。

And he has over twenty years of experience as a business executive.

他作为一个商业务经理有20余年的经验。