blocks|key|1242195|text|如果你正在为客户开发软件，那么你/你的公司和客户/他们的公司之间就有一份合同。这是合同的双方当事人。其他任何人，不受合同约束，都是第三方。它用于双方之间存在合同的地方，指的是任何不受合同约束的人。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1242196|对于哪一方是“第一”，哪一方是“第二”没有固定的含义，通常你会认为你是第一方，客户是第二方，而客户会认为他们是第一方，你是第二方，就像第一、第二和第三人称我/他/他们一样。|1242197|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

If you are developing software for a client, then there is a contract between you/your company, and the client/their company. These are the two parties to the contract. Anyone else, not bound by the contract, is a third party. It's used wherever a contract exists between two parties to mean anyone not bound by the contract. 

There is no fixed meaning to which of the two parties is 'first' and which 'second', usually you will think you're the first party, and the client the second, whereas the client will think they are the first party and you the second, in a similar fashion to first, second and third person I/he/they.

blocks|key|1027650|text|第一方=i|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1027651|第二方=你|1027652|第三方=他/她(即对话之外的人)|1027653|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

1st party = I

2nd party = you

3rd party = he/she (i.e. someone external to the conversation)

blocks|key|1027552|text|我不认为第一方和第二方在编程中使用得太多。如果有人开始谈论工作中的第一方和第二方，我想知道它们是什么意思。然而，“第三方”更为常见和熟悉。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1027553|“第三方软件”是一个常见的术语。我从来没有听说过“第一方软件”或“第二方软件”。|1027554|附言:我在英国以英语为母语。|1027555|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

I don't think first and second party are used that much, if at all, in programming. If someone started talking about first and second parties at work, I would wonder what they meant. However, "third party" is much more common and familiar.

"Third party software" is a common term. I've never heard of "first party software", or "second party software". 

PS: I'm a native English speaker in the UK.

blocks|key|1027606|text|牛津词典|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1027607|第三方|1027608|名词|1027609|两个人以外的一个人或一群人，尤其是一场争论。|1027610|·作为两党制中主要政党的替代而组成的政党。形容词attrib|1027611|属于或关于一个人或一个群体的，除了主要涉及的两个人或群体:第三方供应商。|1027612|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|P|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|Q|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|R|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|S|8|@]|9|@]|A|$]]|$1|L|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|M|$]]

Oxford Dictionnary

third party 
noun 
a person or group besides the two primarily involved in a situation, esp. a dispute. 
• a political party organized as an alternative to the major parties in a two-party system.
adjective [attrib.] 
of or relating to a person or group besides the two primarily involved in a situation : third-party suppliers.

blocks|key|1242254|text|我认为它是代码的出处，所以当涉及到库和开发工具时，我会说第一方和第二方是开发工具的开发者和生产者。因此，作为一名.Net开发人员，我和微软的合作伙伴是我和微软，因为我使用微软的框架和控件编写代码，然后我也可能使用第三方代码/控件。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1242255|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I think of it as from where the code comes from, so when it comes to libraries and development tools I'd say that the first and second parties are the developer and the producer of the development tool. So as a .Net developer the parties are me and Microsoft, since I write code using Microsofts framework and controls and I might also then user third party code/controls.

blocks|key|1242322|text|第一方是开发者，第二方是软件用户|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1242323|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

1st party is Developer, 2nd party is software user

blocks|key|1027734|text|不过，它是由上下文驱动的。这种情况也适用。从开发的角度来看:我正在为我的公司开发一个内部使用的应用程序(第一方)大多数我用于该应用程序的“资产”来自微软(第二方)，但我也在使用来自另一家公司(第三方)的这个数据库库。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1027735|第一个和第二个仍然可以互换，这取决于视角。客户甚至不在这个图表上，但部分原因是这与它自己的规则是完全不同的关系。|1027736|当谈论法律合同时要小心，因为他们经常使用术语第三方，因为我们正在讨论，还有一种做法是将pe4ople识别为“第一部分A的当事人，第二部分B的当事人，第三部分C的当事人，……，第n部分的当事人……|1027737|它只用于列出一堆人，而不指定关系。也可以是第一部分a、b、c的当事人，也可以是第二部分x、y、z、…|1027738|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|L|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|M|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|I|$]]

It's context driven though. This situation also applies.
From a development perspective:
I'm developing an app for my company for internal use (first Party)
Most of the "assets" that I'm using for the app are from Microsoft (second party)
But I'm also using this database library from this other company (third party)

First and Second remain interchangeable depending on perspective. The customer isn't even on this chart but that's partially because that's an entirely different relationship with it's own rules.

Be careful when talking about legal contracts because while they do often use the term third party as we're discussing, there is also the practice of identifying pe4ople as"the party of the first part A, the party of the second part B, the party of the Third part C, ... , the party of the nth part ...

which serves only to list a bunch of people without specifying a relationship. And it can also be the parties of the first part a,b,c and the parties of the second part x,y,z, ...

blocks|key|1027792|text|第一方是网站、程序或游戏的开发者。比如微软或谷歌。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1027793|第二方是客户端，也就是开发者作品的浏览者。|1027794|第三方是媒体的外部来源。|1027795|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

The first party is the developer of the website, program, or game. Like Microsoft or Google.

The second party is the client, the viewer of the developer's work.

The third party is an external source of media.

I know precisely what a "third-party library" is, so I assume that the "third-party" in this case, simply is an arbitrary person/company other than the developer?

Has it to do with "first person" / "second person" etc perhaps?

The fact that there is a "third party" suggests that there is a "first party" and a "second party" as well. Are those terms well defined?

(I'm not a native english speaker.)

Exactly what is a "third party"? (And who are the first and second party?)

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我确切地知道什么是“第三方库”，所以我假设这种情况下的“第三方”仅仅是一个任意的人/公司，而不是开发人员？是否与“第一人称”/“第二人称”等有关？存在“第三方”的事实表明，存在“第一方”和“第二方”。这些术语定义得好吗？(我的母语不是英语。)

问到底什么是“第三方”？(谁是第一方和第二方？)
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问到底什么是“第三方”？(谁是第一方和第二方？)
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