(接上期) 小发明解决大难题2004年的整个暑假,郭媛媛、肖潇、张煦三位同学几乎是在大堤上度过的。整整两个月时间,划门顶着炎炎烈日,挥洒着汗水,天天往返于大堤与实验室之间。她们白天抓紧时间在大堤上实地观测,太阳快要下山时,又赶紧回到实验室制作模型进行实验。整个暑假,她们共制作 (Connected) small inventions to solve big problems throughout the summer of 2004, Guo Yuanyuan, Xiao Xiao, Zhang Xu three students almost spent on the embankment. A full two months time, top of the gate planted with the scorching sun, sweat, every day between the levee and the laboratory. They hurriedly observed the earth during the day on the embankment, and when the sun was about to go downhill, they hurried back to the laboratory to make models for experiments. Throughout the summer, they produced