现在好多软件在安装时要输入序列号才能继续，也就是说，你不输入序列号，则

《下一步》这个按钮是灰色的。你无法点他，使用本程序，点击激活-Now a lot of software to be installed in order to continue to enter the serial number, that is to say, you do not enter a serial number, then " Next"　button is the gray. You can not point him to use the program, click to activate