abbr.(=emergency room)急診室
【化】元素鉺（erbium）的符號.
int.呃
Er, let me see, it's three dollar all together. 呃，主我想想看，那是總共3美元。
Er, let me think. Sorry, my mind's gone blank. 讓我想一想。抱歉，我大腦一片空白。
Erving. what's he call, er stone? 歐文，他叫什么來著，歐文。斯通？
