to keep one's plans or intentions secret
держать свои планы или намерения в секрете (derzhat svoi plany ili namereniya v sekrete)
"During the negotiations, she kept her cards close to the chest."
"Во время переговоров она держала свои карты близко к груди." (Vo vremya peregovorov ona derzhala svoi karty blizko k grudi)
to study or explore something in great depth
having practical intelligence and experience, not just book...
to decide something
the overall perspective or situation
the principle that everyone is subject to the law
two people who used to dislike each other but became friends