110 Restart marker reply. In this case, the text is exact and not left to the particular implementation; it must read: MARK yyyy = mmmm where yyyy is User-process data stream marker, and mmmm server's equivalent marker (note the spaces between markers and "=").
重新启动标志回应。这种情况下，信息是精确的并且不用特别的处理；可以这样看：标记 yyyy = mmm 中 yyyy是用户进程数据流标记，mmmm是服务器端相应的标记（注意在标记和等号间的空格）
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120 Service ready in nnn minutes.
服务在NNN时间内可用
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125 Data connection already open; transfer starting.
数据连接已经打开，开始传送数据.
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150 File status okay; about to open data connection.
文件状态正确，正在打开数据连接.
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200 Command okay.
命令执行正常结束.
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202 Command not implemented, superfluous at this site.
命令未被执行，此站点不支持此命令.
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211 System status, or system help reply.
系统状态或系统帮助信息回应.
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212 Directory status.
目录状态信息.
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213 File status.
文件状态信息.
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214 Help message.On how to use the server or the meaning of a particular non-standard command. This reply is useful only to the
human user. 帮助信息。关于如何使用本服务器或特殊的非标准命令。此回复只对人有用。
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215 NAME system type. Where NAME is an official system name from the
list in the Assigned Numbers document.
NAME系统类型。
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220 Service ready for new user.
新连接的用户的服务已就绪
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221 Service closing control connection.
控制连接关闭
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225 Data connection open; no transfer in progress.
数据连接已打开，没有进行中的数据传送
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226 Closing data connection. Requested file action successful (for example, file transfer or file abort).
正在关闭数据连接。请求文件动作成功结束（例如，文件传送或终止）
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