此外，过去三年多来，我曾为广州市的几家大公司当过业务英语口译员，同时还

此外，过去三年多来，我曾为广州市的几家大公司当过业务英语口译员，同时还帮助他们处理一些商务信件，因而获得了一些英语口译和笔译方面的实践经验。

結果 (英文) 1:

Moreover, in the past three years, Guangzhou City, I worked for several companies as a business English interpreter, but also to help them deal with some business letters, gained some practical experience in English interpretation and translation.

結果 (英文) 2:

In addition, over the past three years, I worked for several large companies Guangzhou business English worked as interpreters, while also helping them to deal with some business letters, thereby gaining some practical experience in interpretation and translation in English.

結果 (英文) 3:

In addition, over the past three years, several large companies I worked for the Guangzhou city as a business English interpreter, but also help them to deal with some business letters, and get some English interpretation and translation experience.