A very complex or unsolvable problem.
Очень сложная или неразрешимая проблема. (ochen slozhnaya ili nerazreshimaya problema)
"The issue of climate change is like a Gordian knot that needs bold action."
"Проблема изменения климата — это как гордиев узел, который требует решительных действий." (problema izmeneniya klimata eto kak gordiyev uzel kotory trebujet reshitelnix deystviy)
to mark the beginning and end of something
To continue practicing a custom so that it is not forgotten
to be born into a rich family
to buy something that is defective or worthless
to be in a difficult position or disadvantage
to take responsibility for someone and help them learn
