首先

Plutonium was first discovered in a Berkeley lab (as were the aptly-named berkelium and californium).

铂就是首先在巴克实验室发现（确切名字该叫巴克或加）。

Firstly, I arranged the time properly, adjusting rest time, sutdy time and sportful time.

首先，合理安排时间，调整好作息时间，分配好学习、工作、娱乐时间。

The first being a skirt type garment (dhoti), with a blouse (choli) and scarf.

首先是裙子样式衣服（长裤），还有上衣（露出肚脐紧身衣）和围巾。

The first clue is by the famous Italian gastronome Giuseppe Maffioli.

线索首先来自著名意大美食家GiuseppeMaffioli。

First, he had to establish his credentials as a researcher.

首先，他得证明自己做调查员资格。

The ban was initially opposed by the US.

这一禁令首先遭到美国反对。

For openers, I don’t think his work is very original.

首先，我觉得他作品并无原创性。

This paper firstly introduces the theory of normalization and denormalization in logical design of database.

文中首先论述了数据库逻辑设计中关系规范化与反规范化问题。

You have first got to motivate the children and then to teach them.

你首先得激发孩子学习兴趣, 然后再去教他们。

The boy justified himself by saying he did not begin the fight.

这男孩为自己辩护说他没有首先动手打人。

The formation-types are first rearranged into four major biochores-forest, savanna, grassland , and desert.

首先把群系型重新排列主要生态区——森林、稀树草原、草地和荒漠。

Firstly, an analysis on the jurisprudent basis of the freedom of association is necessary.

首先，研究结社自由就有必要对结社自由法理基础进行探讨。

First he divided it in two, and then divided each into four.

他首先把它分两份, 然后又把每份分份。

Firstly, the method of dissociating erythrophores from Xiphophorus helleri was developed.

首先，本试验建立了红剑（Xiphophorus helleri）红色素细胞分离和培养方法。

I winced, but went bravely on. "First let us examine the fallacy called Dicto Simpliciter."

我有点迟疑，但还是坚定地讲下去：“首先，咱们研究一叫‘过分简化’谬论。”

A weak dyke bursts easily before a flood.

大水首先冲毁不坚固堤防。

We begin by establishing the unbiasedness of OLS estimators under a set of assumptions.

首先，我们在一些假定下证明OLS估计量无偏性。

First and foremost, we must ensure that the children are safe.

首先，我们必须保证孩子们安全。

Don’t forget, he is first and foremost an actor, not a singer.

别忘了，他首先是演员，而不是歌手。

Delhi was first and foremost a barracks town.

德里首先是、也主要是一座军营城。