optional coach临时: at the time when sth. happen ...添: add; increase挂: hang; put up; suspend的: 4次方是 The fourth power of 2 i ...客车: passenger train; passenger c ...下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:临时添挂的客车,即可在微信中查询翻译