at first

at the beginning; in the initial stage or stages

首先；最初，开始；初期

at first Hugo tried to be patient.

开始，雨果还想耐心一点。

at first glance

at first Hugo tried to be patient.

开始，雨果还想耐心一点。

at first hand

at first Hugo tried to be patient.

开始，雨果还想耐心一点。

at first instance

at first Hugo tried to be patient.

开始，雨果还想耐心一点。

at first sight

at first Hugo tried to be patient.

开始，雨果还想耐心一点。

the first among equals

at first Hugo tried to be patient.

开始，雨果还想耐心一点。

first blood

at first Hugo tried to be patient.

开始，雨果还想耐心一点。

first come, first served

used to indicate that people will be dealt with strictly in the order in which they arrive or apply

先到者先受款待（表示严格按先后次序办事）

tickets are available on a first come, first served basis.

售票实行先来先售予的原则。

first and foremost

most importantly; more than anything else

最重要的是，首要的是

Delhi was first and foremost a barracks town.

德里首先是、也主要是一座军营城。

first and last

fundamentally; on the whole

根本上；总体上

museums are first and last about curatorship.

博物馆的好坏从根本而言与其管理者有关。

first of all

before doing anything else; at the beginning

首先；最初

first of all, let me ask you something.

首先，让我先问你点事情。

first off

(informal, chiefly N. Amer.)as a first point; first of all

(非正式，主北美)首先

first off, I owe you a heck of an apology.

首先，我真的应该向你道个歉。

first past the post

(of a contestant, especially a horse, in a race) winning a race by being the first to reach the finishing line

（参赛者，尤指赛马）第一个到达终点

first thing

early in the morning; before anything else

一大早；首先

I have to meet Josh first thing tomorrow.

我明天一大早就得去接乔西。