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Update ch04-02-references-and-borrowing.md (#108)

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focksor surooi 2022-12-16 16:35:48 +08:00 committed by GitHub
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@ -54,7 +54,7 @@
{{#include ../listings/ch04-understanding-ownership/listing-04-06/output.txt}}
```
正如变量默认是不可变的，引用也一样。（默认）不允许修改引用的值。
正如变量在默认情况下是不可变的一样，引用也是不可变的。我们无法通过引用修改内容。
### 可变引用