very calm and composed
очень спокойный и уравновешенный (ochen spokoyniy i uravnoveshenniy)
"He stayed cool as a cucumber during the meeting."
"Он оставался очень спокойным во время встречи." (on ostavalsya ochen spokoynim vo vremya vstrechi)
used to say that an activity has been successful up to this...
to begin to improve after a difficult period
to prepare to work hard or take on a challenge
to focus on the most important things before others
to do what you want without worrying about what others think
to be in a very difficult or desperate situation