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web = https://www.youtube.com/watch?v=K9_VFxzCuQ0&list=RDMMK9_VFxzCuQ0&start_radio=1
ID = K9_VFxzCuQ0
{{ youtube ID}}

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$ Ctri + Alt + U
![0113175438](githubusercontent.com/20210508.png "注释:这是朴彩英")

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print("This is python")

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#include<stidio.h>
int main(int args, char buffer[128])
{
    printf("This is c")
}

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class HelloWorld {
    public static void main(String[] args) {
        System.out.println("This is java"); 
    }
}  

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<h1 align = "right">文字右对齐</h1>

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<h1 align = "left">文字左对齐</h1>

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<h1 align = "center">文字居中</h1>