At US $169 million (RMB $1,385 million) a kilometre, that makes the socalled Red Line the most expensive public transport project in the world.是什么意思_At US $169 million (RMB $1,385 million) a kilometre, that makes the socalled Red Line the most expensive public transport project in the world.在线翻译_英语_读音_用法_例句