在花括号里是这个程序的代码，我在做什么？
Inside the curly braces is this program's code, what am I doing?
每个产品也可以包含一个用花括号括起的操作。
Each production can also contain an action, enclosed in braces.
它是一个单一表达式，所以不需要额外的花括号。
It is a single expression, so no extra curly braces are needed.
当我以那个花括号结束，swap的角色就结束了。
花括号的位置并不重要，然而人们总是坚持自己所信奉的。
The position of braces is less important, although people hold passionate beliefs.
它们是正确的，就像那个图所表示的，然后以那个花括号结束。
They are correct, as the picture suggests, but then I hit that curly brace.
它们是正确的，就像那个图所表示的，然后以那个花括号结束。
They are correct, as the picture suggests, but then I hit that curly brace.
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