to remain calm in a stressful situation
оставаться спокойным (ostavat'sya spokoynym)
"It’s important to keep cool even when things go wrong."
"Важно оставаться спокойным, даже когда всё идёт не так." (Vazhno ostavat'sya spokoynym, dazhe kogda vsyo idyot ne tak.)
to continue doing something difficult until the end
to remain loyal to your values or beliefs
to move in the direction of something
to become agitated or upset because of something
to regain consciousness
to say exactly what one thinks or feels