您可能会喜欢弄清如何调整语法的练习(提示：请记住允许各产品彼此递归)。
You might enjoy the exercise of figuring out how to adjust the grammar (hint: remember that productions are allowed to be mutually recursive).
使用DSLs时，常常需要从目标语法开始向后运转，以弄清如何实现它。
When working with DSLs, it is common to start with your goal syntax and reverse engineer backwards to figure out how to implement it.
它们也能弄清基本的语法结构，比如“我吃苹果”和“苹果吃我”的区别。
They understood basic grammatical constructions, such as the difference between "me eat apple" and "apple eat me.
它们也能弄清基本的语法结构，比如“我吃苹果”和“苹果吃我”的区别。
They understood basic grammatical constructions, such as the difference between "me eat apple" and "apple eat me.
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