the final frontier (ðə fáinal frontíer)

Idiom Science fiction

Meaning

the last or most difficult challenge or area of exploration

el último o más difícil desafío o área de exploración (el ultimo o mas dificil desafio o area de exploracion)

"For many scientists, space remains the final frontier."

"Para muchos científicos, el espacio sigue siendo la última frontera." (Para muchos cientificos, el espacio sigue siendo **la ultima frontera**.)

to organize by separating what is needed from what is not

To transfer knowledge, customs, or traditions from one gener...

a constant source of annoyance or trouble

an unplanned or spontaneous decision or action

to choose not to participate in something

to believe someone even if you are not sure they are telling...