There's formal communications, business letters and so forth, less and less the case today.

有正式的沟通，商务信函等等，现在越来越少了。

Using the word “that” in two of the phrases is more suited for formal written communication, such as work-related emails.

在两个短语中使用“that”更适合正式的书面交流，比如工作邮件。

Formal communication channels are usually vertical.

【vertical】正式的沟通渠道一般都是纵向的。

This hierarchy is made up of a variety of very specialized roles and is held together by formal, written communications.

这种层次结构由各种非常专业的角色组成，并通过正式的书面沟通联系在一起。

Its members each have specialized roles that fit together in a hierarchy – that is, a clear chain of command linked by formal, written communications.

它的每个成员都有专门的角色， 这些角色在一个层次结构中组合在一起——也就是说，一个由正式的书面通信联系起来的清晰的指挥链。

In the earlier half of the day there was business to hinder any formal communication of an adverse resolve; in the later there was dinner, wine, whist, and general satisfaction.

在当天的前半段， 有事要阻止任何正式的反对决定的沟通； 后来有晚餐， 葡萄酒，惠斯特和一般满意。