尤其指针部分，更是C语言的精华，也是C语言的难点。
Particularly, needle part is an essence of language c, and is also difficult part.
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C语言是仅有的教你什么是真正的指针的语言。
C is the only language that teaches you what Pointers really are.
指针赋予了C语言不凡的能力。
It is Pointers that give C its power.
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