幼虫叫“豆虫”，老熟的长约90毫米，嫩绿色，头部色较深，尾部有尾角，从腹部第一节起，两侧有七对白色线。
Larvae called "bean insect", the old familiar about 90 mm long, head of peak green, the color is deep, the tail end Angle, from the abdomen is first quarter up, both sides have seven to white line.
约莫一两小时后，一尾三角鱼鳍划过水面，围着一群人转起了圈。
After an hour or two, a triangular fin sliced the surface of the water and circled the group.
611所(成都飞机设计院)早在1960年代末就开始研究鸭式无尾三角翼布局飞行平台。
611 institute (Chengdu Aircraft Design institute) initiated studied on the "tailless delta-canard" wing planform as early as the late 1960s.
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