firstly

英 [ˈfɜːstli]

美 [ˈfɜːrstli]

adv. (用于列举)第一，首先

Collins.1 / BNC.3974 / COCA.20778

牛津词典

adv.

（用于列举）第一，首先
used to introduce the first of a list of points you want to make in a speech or piece of writing
1. There are two reasons for this decision: firstly…
  做此决定理由有二：第一…

柯林斯词典

ADV 首先;第一
You usefirstlyin 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.
1. The programme is now seven years behind schedule as a result, firstly of increased costs, then of technical problems...
  该项目现已经比预定时间晚了7年，原因首先是因为成本增加，其次是由于技术问题。
2. Vitamin C has many roles to play in weight control. Firstly, it is needed for hormone production.
  维生素C在控制体重方面扮演着多重角色。首先，荷尔蒙的生成有赖于它。

英英释义

adv

before anything else
1. first we must consider the garter snake
Synonym:firstforemostfirst of allfirst off

双语例句

Firstly, the paper expounds the background and significance of this subject;
本论文首先论述了选题的背景和意义；
The programme is now seven years behind schedule as a result, firstly of increased costs, then of technical problems
该项目现已经比预定时间晚了7年，原因首先是因为成本增加，其次是由于技术问题。
Firstly, AMDB data source, format and modeling methodology were analyzed.
首先分析了AMDB数据的来源、格式与建模方法；
Firstly, we study the properties of these auxiliary functions.
我们首先研究了这几个辅助函数的性质。
Vitamin C has many roles to play in weight control. Firstly, it is needed for hormone production.
维生素C在控制体重方面扮演着多重角色。首先，荷尔蒙的生成有赖于它。
In this paper firstly the corona pulse current is theoretically researched;
首先对电晕脉冲电流进行了理论研究；
This paper analyzes three main points: firstly, multiplexer can accomplish general AND-OR logic function;
本文分析了数据选择器可实现一般与或逻辑函数；
This paper firstly reviewed the development status of biodegradable engine oil at home and abroad.
本文介绍了国内外可生物降解润滑油的发展状况和技术趋势。
Firstly, they must make certain that their pension needs are adequately catered for
首先，他们得确保他们能获得足够的养老金。
Firstly, the overall design of the micro-irrigation system and the system overall framework are given.
首先对微灌系统进行了总体设计，给出了系统总体架构；