Firstly Thefunctionoverview一功能概述
firstly quality品质第一
firstly adopted首次采用
firstly introduces首先介绍了
Firstly Parents首先父母
firstly analyzing首先分析
firstly considered首先考虑
Firstly The通过介绍
Advoacte firstly首倡
ADV（副词） You use firstly in speech or writing when you want to give a reason, make a point, or mention an item that will be followed by others connected with it. 第一 (演讲、文章中用于列举条目); 首先 [ADV with cl/group]
The programme is now seven years behind schedule as a result, firstly of increased costs, then of technical problems.
该计划现在比预定的计划晚了7年，首先是因为费用增加，其次是由于技术问题。