檢視壁垒的原始碼

'''壁垒'''是一个汉语词语，读音为bì lěi，意思指旧时兵营四周的墙壁，泛指防御、戒备的工事，现在常指互相对立的事物或界限。<ref>[https://zhidao.baidu.com/question/1243475878230129259.html?fr=iks&word=%B1%DA%C0%DD&ie=gbk&dyTabStr=MCwzLDEsMTAsMiw0LDcsNiw1LDk= 壁垒是什么意思简单点]百度知道</ref>

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|<center><img src=" https://nimg.ws.126.net/?url=http%3A%2F%2Fdingyue.ws.126.net%2F2022%2F0623%2Feee071cdj00rdwp5r000id000fj00acp.jpg&thumbnail=660x2147483647&quality=80&type=jpg   " width="180"></center><small>[https://www.163.com/dy/article/HAHM935R0518WMF4.html 网易订阅]</small> 
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