to be working or responsible for something at a certain time
estar trabajando o ser responsable de algo en un momento determinado (estar trabajando o ser responsable de algo en un momento determinado)
"The guard was on duty all night."
"El guardia estuvo de servicio toda la noche." (el guardia estubo de servicio toda la noche)
to take responsibility for something difficult
Ready to depart or begin a journey.
to read something quickly
When the economy improves, everyone benefits to some extent.
to accept a difficult situation without complaining
a fundamental change in approach or underlying assumptions