to think about something that happened in the past
an etwas denken, das in der Vergangenheit passiert ist (an etwas denken, das in der vergangenheit passiert ist)
"When I look back at my college days, I realize how much I’ve learned."
"Wenn ich auf meine Studienzeit zurückblicke, merke ich, wie viel ich gelernt habe." (wenn ich auf meine studienzeit zurueckblicke, merke ich, wie viel ich gelernt habe)
to make people notice or focus on important problems
to take measures to defend from threats or attacks
to quickly write something for later use
to feel deeply thankful or obliged to someone
to relax after being busy or stressed
to access a website or system by entering credentials