二级域名和子域名到底啥关系?看完这篇就通透了!解析二级域名与子域名的奥秘,一文通透
What exactly is the relationship between a secondary domain name and a subdomain name? After reading this article, you'll have a clear understanding! Unravel the Mysteries of secondary domains and subdomains in One article
以上为机器翻译结果，长、整句建议使用 人工翻译 。