first off

例句：

1. 1. First off, let's start with the basics.
   首先，让我们从基本开始。
2. 2. First off, weneed to decide on a budget.
   首先，我们需要决定一个预算。
3. 3. First off, Iwant to apologize for my earlier comments.
   首先，我想为我之前的评论道歉。