Sorry, this forum name has been registered. 是什么意思

Sorry,this forum name has been registered什么意思? Sorry, this forum name has been registered. 是什么意思 Sorry,In this world, forum of 这句英语语法有什么错误吗?I am interest in joining this forum 请问:When posting to this forum,please feel free to start a new thread to introduce yourself! iron forum浏览器好用吗 请问法律上forum state forum moderator是什么意思 forum moderator是什么意思 groundfish-forum是什么意思 I'm sorry for this 怎么翻译 I'm ____(terrible) sorry for this. I'm____(true)sorry for this thing. sorry.this copy premiere has expired是什么意思 Sorry,this email has been registered. This is my decision, sorry! 中文是什么意思? Sorry!Is this your coat?（改错）