在开始之前一定要做演讲练习。

Do some speech exercises before you begin.

youdao

在开始实际配置之前，一定要正确地安装和配置LDAP服务器。

Before starting the actual configuration, make sure that the LDAP server is properly installed and configured.

youdao

但是首先，如果你不经常跑步，一定要确定你在开始之前看过了《完全菜鸟指导手册》。

But, first, if you've never run before, make sure you check out the Absolute Beginners' Guide to Running before getting started.

youdao

I hadn't set out with a plan that I wanted to teach at some of the best universities in the country.

一开始，我并没有给自己制定目标,一定要在这些最好的大学执教。

普林斯顿公开课 - 人性课程节选