We are very pleased to have been able to finalized this initial business with you after protracted exchange of correspondence.

经过这样冗长的书信往来，我们非常高兴终于可以把双方的第一单生意完成。

youdao

Any amendments to this Agreement agreed by the Contracting Parties shall come into effect when confirmed by an exchange of correspondence through the appropriate channels.

缔约双方所达成的对本协定的任何修改应在缔约双方经适当途径换函确认后生效。

youdao

We coincided in several conferences over the past three years, listened to each other, talked to each other and established an email correspondence and exchange of articles.

在过去的三年中，我们在很多会议上都有所交流，建立了电子邮件联系，就彼此的文章进行交流。

youdao

Further you may be faced with a pile of paper that will land on your mat, from the local authority in advance of a telephone adjudication with a solicitor (always the best choice rather than simply having the thing dealt with by exchange of correspondence, though you have the choice).

BBC: Parking - Your Thoughts