Two chemists were talking shop, and I hardly understood a word they said.是什么意思？

Two chemists were talking shop, and I hardly understood a word they said.

两位化学家在谈论他们本行的事, 他们的话我一句也听不懂.

two

n. 两个，两个东西，两点钟，一对；adj. 两个的，我

例句
He has been absent from his desk for two weeks...
他已经有两个星期没有坐在办公桌前了。

chemists

n. 化学家( chemist的名词复数 )，药剂师，药商，药房；

例句
Understanding these rare molecules will help chemists to find out what is achievable.
了解这些稀有分子能帮助化学家找到可实现的目标。

were

be的过去时复数和第二人称单数形式，有时代替 was,用于条件从句、动词 wish 之后等；

例句
Shops, houses, and vehicles were set ablaze.
店铺、房子和车辆全都陷于火海。

talking

n. 讲话，（表示对所说的事情感兴趣） 你这话说着了，提起，说到；adj. 会说话的，讲话的，饶舌的，富于表情的；v. 说( talk的现在分词 )，讨论，说话，（用以强调款额、情况严重程度等）讲的是；

例句
I say 'boys' advisedly because we are talking almost entirely about male behaviour...
我特意说成“男孩们”因为我们几乎一直在讨论男性的行为。

shop

n. 商店，工厂，办事处，购物；vt.& vi. （到…）去买东西[购物]，逛商店；vt. 购物，买东西；

例句
Many caravans are let by private individuals through adverts in papers or shop windows.
许多旅行拖车由私人通过在报纸或商店橱窗上做广告出租。

and

conj. 和，与，而且，于是，然后，因此；

例句
I spend a lot on expensive jewelry and clothing...
我花很多钱购买昂贵的首饰和衣服。

hardly

adv. 几乎不，简直不，刚刚，严厉地，粗鲁地；

例句
I could hardly wait for 'Boys' World' to appear each month.
每个月我都翘首期盼着《男孩世界》的出版。

understood

v. 懂，理解( understand的过去式和过去分词 )，了解，默认，听说；

例句
I never understood why he didn't just accede to our demands at the outset.
我一直搞不懂他为什么不一开始就同意我们的要求。

word

n. 单词，话语，诺言，消息；vt. 措辞，用词，用言语表达；vi. 讲话；

例句
...the magic that still attaches to the word 'spy'.
“间谍”一词依然具有的神奇魅力

they

pron. 他/她/它们，人们，大家，政府，当局，她们；

例句
The storms had abated by the time they rounded Cape Horn.
他们绕过合恩角时，暴风雨已经减弱。

said

adj. [律]上述的，少说为妙，（做）某事有/没有很多优点（或好处）：某事物有/没有多少可说的，说到底；v. 说，讲( say的过去式和过去分词 )，表明，念，说明；

例句
They said goodbye to him as he got aboard the train at Union Station.
当他在联合火车站登上火车之际，他们向他道别。