大街上行人川流不息。在熙熙攘攘的行人中间,不时传来一种人力三轮车“闪开”、“让一下”的吆喝声。听到吆喝声的行人,似乎总是很自觉、很“知趣”地纷纷退开,且唯恐躲避不及。这是一些什么样的人力三轮车呢?货运小三轮也!若问为何行人对它退避三舍?车速非凡也!城市里一般的货运人力三轮车,通常总 Pedestrians on the street stream endless. In the midst of the bustling pedestrians, a human tricycle “flickering” and “letting go” shouts sounded from time to time. Hear the shouting pedestrians, it seems always very conscious, very “interest” have to leave, and fear of avoiding less. This is what kind of manpower tricycle it? Small three-wheeled cargo! If asked why pedestrians retreat it? Speed ​​extraordinary! City general freight human tricycle, usually the total