一朋友说,如果你细心观察,就会发现,麻雀只需双腿一点,翅膀轻轻一拍,就能飞起来!而天鹅要想飞起来,却复杂艰难得多,它必须有一段助跑的距离,必须奋力地拍打着翅膀,才能慢慢飞起来。麻雀飞起来简单轻松,但轻易得来的飞翔,注定它飞得不高,也飞得不美。而天鹅历经了起飞的复杂和艰难,才飞得那么高远、那么美丽。二朋友说,有人做过实验,把一只刚孵出来的小天鹅放在一 A friend said that if you look carefully, you will find that the sparrows need only a few legs and the wings gently tap to fly. The swan wants to fly, but it is much more complex and difficult. It must have a run-up Distance, we must flapping wings, in order to slowly fly up. Sparrows fly simple and easy, but easy to fly, doomed it fly is not high, but also fly is not beautiful. The swan after taking off the complex and difficult to fly so far lofty, so beautiful. Two friends said that someone had done an experiment, put a newly hatched little swan on one