firstly

US /ˈfɝːst.li/
UK /ˈfɝːst.li/
"firstly" picture
1.

首先, 第一

before anything else; first

:
Firstly, I want to thank everyone for coming.
首先,我要感谢大家的到来。
We need to consider several factors: firstly, the cost; secondly, the time; and thirdly, the resources.
我们需要考虑几个因素:首先是成本;其次是时间;第三是资源。