Simply "until now", "so far", "still". It conveys the idea of there being no change until current moment. "Пора" is a word that means rougly "time, certain period of time", though not used much nowadays outside such set expressions. It can be used both to say "this has been happening up to now" and to express some new development, like "Until now, no one managed to extract this compound from a solution. This work suggests an innovative procedure that allowed us...." and so on. До сих пор все отказывались от этого предложения. = So far, everyone has declined that suggestion. По-моему, они до сих пор в Америке. = I believe they are still in America. Эта проблема до сих пор актуальна. = This problem is still of great importance. Все до сих пор думают, что он мёртв. = Everyone still thinks that he is dead. Почему ты до сих пор здесь? = Why are you still here?

До сих пор = до настоящего момента Например: Я до сих пор не выучил новые слова. Я до сих пор не знаю, как сказать по-русски Hello. Learn Russian online www.babylon-project.com