乐凡天家里有一辆电瓶自行车。刚买来的时候,电瓶车的坐垫和乐凡天的脑门儿一样高;几年以后,坐垫就只有乐凡天的肚皮那么高了。“爸爸,”乐凡天问,“我都长大了,电瓶车怎么不长啊?”“你一天按时三顿饭,当然会长啦,”爸爸说,“可是电瓶车呢?有一顿没一顿的——我是指充电啊——当然就不长啦。” Music days there is a battery bicycle battery. Just bought when the battery car seat and music days as high forehead children; a few years later, the cushion is only the music of the belly so high. “” “” “Everyday, three meals a day, of course, the president, ” Dad said, “But the battery car ? There is no meal - I mean charging - of course not long. ”