first of all
01
首先, 第一
used to introduce the first and essential point or reason when presenting a series of statements
例子
First of all, I want to thank everyone for attending the meeting.
首先, 我要感谢大家参加这次会议。
First of all, we need to establish clear goals before moving forward.
首先，我们需要在前进之前确立明确的目标。
