to rise to a standing position
立ち上がる (tachiagaru)
"Everyone stood up when the teacher entered the room."
"先生が教室に入ると、みんな立ち上がった。" (Sensei ga kyōshitsu ni hairu to, minna **tachiagatta**.)
to cooperate or collaborate with someone on the same task or...
to be very excited or happy
to employ or bring someone into a company
to take great pleasure or delight in something
to vomit
to present new ideas to a specific audience