to be working or responsible for something at a certain time
im Dienst sein oder für etwas verantwortlich sein (im dienst sein oder fur etwas verantwortlich sein)
"The guard was on duty all night."
"Der Wachmann war die ganze Nacht im Dienst." (der vakhman var dee ganze nacht im dienst)
to dance for a long time, especially during a celebration
to become comfortable in a new situation
money earned with little effort
to quickly assess someone or something
to be unfit or unhealthy due to lack of exercise
to decline suddenly and dramatically