by car, by car, 嘀 嘀 嘀. by bus, by bus, 嘟 嘟 嘟. by bike, by bike,叮 铃 铃. by plane, by plane, 轰 隆 隆. by train , by train, 呜 呜 呜. walk , walk, one two one. walk, walk, one two one.