Everyone here is up to speed.这里所有人都了解最新情况。

Let me bring you up to speed on our plans. [=let me tell you about the changes in our plans]我来给你说说我们这些计划的最新进展吧。

It will take some time for the new secretary to get up to speed. [=to learn the job]新来的秘书需要一段时间去熟悉工作。