这种做法类似于房子烧毁后再安装洒水装置。

That is akin to installing sprinklers after the house has burned down.

youdao

你应该先从照明工具包入手，然后再安装安全设备。

You could begin with a lighting starter kit and add on security devices later.

youdao

所有的电脑应用以及资料处理都可以在网页上完成，用户不必再安装其它的程序。

Also, all the computer's applications and data are on the web, and users cannot install programs themselves.

youdao