to rise to a standing position
aufstehen (aufstehen)
"Everyone stood up when the teacher entered the room."
"Alle standen auf, als der Lehrer den Raum betrat." (Alle **standen auf**, als der Lehrer den Raum betrat.)
to move about without a fixed purpose or direction
to enter a place, especially a building or room
to isolate oneself from others to avoid stress
to successfully enter a new market or industry
to move around and talk to different people at a social even...
to think carefully about your feelings and actions