Do you even know how serious this is?

- Do you even know how serious this is? If we don't get everyone pay close attention to this problem, more people will die. / Ты понимаешь, насколько это серьезно? Если мы не сделаем так, что все обратят пристальное внимание на эту проблему, последует больше смертей.

- I know. What happened to that poor kid is a big tragedy for all of us. But there's nothing I can do about it. / Я знаю. То, что произошло с тем несчастным ребенком, это большая трагедия для всех нас. Но я здесь ничего не могу поделать.

understand logic

Although I understood her logic, I was stunned by her rudeness. / И хотя я понимал ее логику, я был поражен ее грубости.

You don't know what you're saying.

I still don't get this at all.

We didn't know what we were doing.

I think I get it.

You don't seem to understand.

Can you understand that at all?

Don't you see what this means?

I'm getting it now.