Terms for subject General containing important problems

English	Russian
an important problem into which too few scientists have researched	важный вопрос, которым занимались лишь немногие исследователи
it is important to make a careful distinction between these approaches to the problem	важно тщательно различать эти два подхода к проблеме
it was an interesting problem, and an important one	это была интересная проблема, и важная
problem becomes more important	проблема становится глубже (translator911)