used for writing the sound that people make when they are thinking about what to say next, or when they are not sure how someone will react to what they are going to say 哦,嗯,呃(表示谈话人思考或犹豫时发出的声音)
Where's the, er, the calculator? 计算器,嗯,在哪里呢?
‘So, are you coming or not?' ‘Er, I don't think I can make it. Sorry.' ‘那么,你来还是不来?’‘嗯,我没办法来。对不起。’