I think we should go back to first principles.
我认为我们应该回到基本原则上。
First of all we must identify the problem areas.
首先我们必须找出问题所在。
The book wasn't anything like as good as her first one.
这本书远远不如她的处女作。
First get students to form groups of four.
首先让学生分成四人一组。
The school is the first of its kind in Britain.
这是英国同类学校中最早的一所。
Mark has two children to support from his first marriage.
马克得扶养他第一次婚姻生的两个孩子。
First try to do something that is within your scope.
你先试着做一件自己力所能及的事。
With the first goal he used his head in more ways than one.
他进第一个球时从多方面动了脑筋。
It was the first time I had set foot on American soil.
那是我第一次踏足美洲大地。