说明你一直欢迎他们的建议，并再次感谢他们的惠顾，结束信函。

Round off the letter by stating that you always welcome their comments, and thank them again for their business.

youdao

说明你一直欢迎他们的建议，并再次感谢他们的惠顾，结束信函。

Round off the letter by stating that you always welcome their comments, and thank them again for their business.

youdao