Translation of unersetzlich

I left the smaller regions out. Do you think they are important? There are some terms that are specifically used in Ecuador. Let's leave it as it is now. Time will show us within a few days if we need them all or not.
Until now I have tried the copy the mode of operation of Mike in class. Even the homework that they gave us do not match the exercise that we tried yesterday. I could not fulfill this task anyway.
My family and I live in Frankfurt. I love South American literature, Jewish music, winter sports, and of course the time with my family. What do you do in your spare time? Reading Spanish books too?