请问"Invalid Command Line

invalid command 啥意思? invalid command是什么意思 command line option syntax error怎么解决 sorry.your command is invalid.please sheck your command什么意思 安装3DMAX2010时出Command line option syntax error type command f CAD2010安装出现 command line option syntax error type command/?f 3DMAX出现Command line option syntax error.Type Command for Hel stm32f10x_it.c:Error:command-line:#564:cannot open preproces 请问 Invalid Email address / password. ds160地址Street Address (Line 1) is invalid 谁能知道这句英文什么意思:Your command is invalid.Please check your comma 550 the rcpt account is invalid (in reply to RCPT TO command