first off
01
首先, 第一
used to signal the beginning of a list, explanation, etc.
例子
First off, let's address the most urgent issue at hand — our project deadline.
首先，让我们解决手头最紧迫的问题—我们的项目截止日期。
We have several tasks to complete; first off, we need to gather all the necessary materials.
我们有几个任务要完成；首先，我们需要收集所有必要的材料。
