一天,我在业务闲暇时,不经意地发现,一只黑蜘蛛在后院的墙上结了一张很大的网。难道蜘蛛会飞?要不,从这个檐头到那个檐头,中间有一米余宽,第一根线是怎么拉过去的?后来,我仔细跟踪观察,发现蜘蛛走了许多弯路,它从一个檐头起,然后打结,顺墙而下,一步一步向前爬。它总是小心翼翼,翘起尾部,不让丝沾到地面的沙石或别的物体上。它走过空地,再爬上对面的檐头,高 One day, when I was in business, I inadvertently discovered that a black spider made a big net on the backyard wall. Does the spider fly? Or else, from the eaves to the eaves, the middle one meter wide, the first line is how to pull past? Later, I carefully followed the observation and found that the spider took a lot of detours, it from a Eaves head, and then tie knot, along the wall, step by step to climb. It is always cautious, cocking the tail, do not let silk stained the ground of sand or other objects. It walked through the open space, then climb the opposite of the cornice, high