to stay calm under stress or provocation
unter Stress oder Provokation ruhig bleiben (unter Stress oder Provokation ruhig bleiben)
"Even in emergencies, he always keeps his cool."
"Selbst in Notfällen bleibt er immer ruhig." (Selbst in Notfällen bleibt er immer ruhig.)
an unplanned or spontaneous decision or action
permission to start or go ahead with something
to be eager or impatient to do something
to increase the level of risk or difficulty
the most modern and advanced
to waste more money on something that has already failed