I appreciate your efforts and cooperation and hope that this will be the forerunner of other transactions in future.
非常感谢贵方的努力与合作,希望这只是我们今后业务往来的开端。
It is one of the world's most important languages because it is so widely used.
英语使用得如此广泛,它已成为全球最重要的语言之一。