a person who keeps their skills or plans secret until an important moment
человек, который скрывает свои навыки или планы до важного момента (chelovek, kotoryy skryvayet svoi navyki ili plany do vazhnogo momenta)
"Nobody expected her to win; she was a dark horse."
"Никто не ожидал, что она победит; она была темной лошадкой." (Nikto ne ozhidal, chto ona pobedit; ona byla **temnoy loshad'yu**.)
expression of sympathy for someone’s misfortune
legal protection given to diplomats from prosecution
to understand or solve the real cause of something
To go beyond acceptable or proper boundaries.
to be the first to do something innovative
to work closely and effectively with someone