我孜孜不倦，照料业务，学习算帐，时间不长，我在经销方面就很内行了。

I attended the business diligently, studied accounts, and grew, in a little time, expert at selling.

youdao

我孜孜不倦，照料业务，学习算帐，时间不长，我在经销方面就很内行了。

I attended the business diligently, studied accounts, and grew, in a little time, expert at selling.

youdao