This paper studied all the possibility of combination between pedestrian phases and motor phases, and put forward the design method of pedestrian phases under the condition of twice -cross street.是什么意思_This paper studied all the possibility of combination between pedestrian phases and motor phases, and put forward the design method of pedestrian phases under the condition of twice -cross street.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句