问题：

I don't understand what exactly Camel does. 我不明白Camel到底是做什么的。

If you could give in 101 words an introduction to Camel: 如果你能用101个单词介绍骆驼：

• What exactly is it? 究竟是什么？
• How does it interact with an application written in Java? 它如何与用Java编写的应用程序交互？
• Is it something that goes together with the server? 它与服务器一起出现了什么？
• Is it an independent program? 这是一个独立的计划吗？

Please explain what Camel is. 请解释一下Camel是什么。

---

解决方案：

参考一： https://stackoom.com/question/b72I/Apache-Camel究竟是什么
参考二： https://oldbug.net/q/b72I/What-exactly-is-Apache-Camel