to try to teach someone something that is difficult for them to learn due to their age or experience
пытаться научить кого-то чему-то, что трудно освоить из-за их возраста или опыта (pytat'sya nauchit' kogo-to chemu-to, chto trudno osvoit' iz-za ikh vozrasta ili opyta)
"It's hard to teach an old dog new tricks, but I'll try."
"Трудно научить старую собаку новым трюкам, но я попробую." (Trudno **nauchit' staruyu sobaku novym tryukam**, no ya poprobuyu)
to help someone through a difficult period
a very good chance; rare opportunity
to overcome a barrier or limitation, particularly in career...
Strong belief can achieve the impossible.
to work too hard without enough rest
to become upset or angry about something
