In fact, today I have worked on this document using three different operating systems and two different web browsers, all without any special software or complex logistics.

事实上，我今天用了三个不同的操作系统，两个不同的浏览器编辑这封邮件，一点问题没有。

youdao

All the email tips, strategies and systems I have seen - my own included - rest on two fundamental assumptions.

所有的电子邮件处理策略、技巧及我所见过的邮件系统，都建立在两个基本假设上。

youdao

It has never disturbed me that we have two party systems in the Anglo-American West, and I've often felt willing to back a reformed party of the left if the governing party of the right had become exhausted or corrupt.

NPR: Book Argues for Retaking the 'Conservative Soul'