因此，通过这篇文章我们能进一步了解某种文书——商务英语信函。

Therefore, now we can understand some practical writing well further through this article.

youdao

因此，通过这篇文章我们能进一步了解某种文书——商务英语信函。

Therefore, now we can understand some practical writing well further through this article.

youdao