firstly [ˈfɜ:rstli]

例句:

• Firstly that was on the edge of a volcano.
  来自VOA
• Firstly, it's expensive, and secondly, it's too slow.
  首先是价格贵，其次，速度太慢。
  
• You should gather yourself together firstly under conditions of great danger.
  在极其危险的情况下你应当先控制住自己.
  
• Firstly I compliment you on most of your excellent Spring issue of "Triangle".
  首先,让我来夸几句,你们《三角迷踪》春季号的大部分内容都非常精彩.
  
• Firstly, the word "regional" is never used.
  来自BBC
• Firstly, the good things about the album.
  来自BBC