to betray or sacrifice someone to save yourself
предать или пожертвовать кем-то, чтобы спасти себя (predat ili pozhertvovat kemto chtoby spasti sebya)
"He threw his colleague under the bus to avoid getting fired."
"Он подставил своего коллегу, чтобы избежать увольнения." (on podstavil svoego kollegu chtoby izbezhat uvolneniya)
To try to make the best possible impression
to go from a bad situation to a worse one
to be suddenly and strongly attracted to someone
to end something dramatically
a fair situation where everyone has equal chances
of the highest quality; excellent