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# 函数Functions
在本练习,你将学习如何编写一个函数,以及 Rust 编译器怎样可以对事物进行追溯trace things way back
译:依据练习的内容,追溯的意思可能是类型推导之类的事。
## 更多信息
- [How Functions Work](https://doc.rust-lang.org/book/ch03-03-how-functions-work.html)