to be on the safe side - на всякий случай
Take an extra key, just to be on the safe side.
to make a long story short - короче говоря
To make a long story short, we won.
to say the least - сказать самое малое, что можно сказать
The film was boring and long, to say the least.
try one's hand at something - попробовать себя в чем-то новом
I want to try my hand at painting. She decided to try her hand at writing stories.
turn over a new leaf - начать заново (жизнь, новое дело)
He promises to quit alcohol for good and turn over a new leaf.
turn the tables - круто изменить ситуацию (поменявшись местами, ролями с противником)
He beat me at chess twice last week. But now I hope to turn the tables (on him).
turn the tide - резко изменить ход событий; повернуть вспять ход событий
The new evidence turned the tide, and the defendant was acquitted of charges.
up-and-coming - многообещающий, подающий надежды
He is an up-and-coming young lawyer who might help you with your case.