我不知道这台机器人何时感染了病毒的翻译：I don't know when this robot was infected with the virus 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

I do not know this when the infected robot

I don't know when this robot was infected with the virus

I did not know when this robot did infect the virus

I do not know when this robots infected with a virus

I don't know when this robot was infected with the virus