Level 5 · word 11,519 of 20,000

firstly

/ˈfɜːrstli/ American
  • adv. 第一, 首先
Definition
  • adv. used to introduce the first point in a list
Example
Firstly, we need to check the weather before planning the trip.
首先,我们需要在计划旅行之前查看天气。