abbr.(=emergency room)急诊室
【化】元素铒（erbium）的符号.
int.呃
Er, let me see, it's three dollar all together. 呃，主我想想看，那是总共3美元。
Er, let me think. Sorry, my mind's gone blank. 让我想一想。抱歉，我大脑一片空白。
Erving. what's he call, er stone? 欧文，他叫什么来着，欧文。斯通？
