你首先需要熟悉文件归档方法。

You will first need to acquaint yourself with the filing system.

《牛津词典》

要生活，你首先必须存在。

To live, you have to exist at first.

youdao

它让你首先看别人怎样对待你，其次看你怎样对待别人。

It makes you look firstly at how you're treated and secondly how you treat everybody else.

《柯林斯英汉双解大词典》

And the first thing you do is ask is it an instance of some problem that other people have already solved?

而且你以前从没碰过这个问题,你首先要做的一件事就是问问自己,这是不是一个别人已经解决了的问题？

麻省理工公开课 - 计算机科学及编程导论课程节选

If you want to spend time with a friend but you need to find out their schedule first,

如果你想要和朋友们一起玩，你首先得看一下他们的日程安排。

When 课堂 - SpeakingMax英语口语达人

Wait. Don't you first need to study the other ?" so that you can be more sensitive to others?"

等等，你难道不要首先研究别人,才能对别人更敏感吗“

哈佛公开课 - 幸福课课程节选