在落日的余辉中,天空变成了绛紫色。这时,在美国得克萨斯州奥斯汀市的议会街大桥上,已经聚集了许多人,前往者依然络绎不绝。人们举家出动,父母亲把孩子高高地举过肩头,等待蝙蝠出行的壮美景观。随着日落,微风停息了。突然,传来一阵“嗡嗡”声,继而闪现出一个不断运动着的群体,之后,接二连三,数以万计的蝙蝠腾空盘旋 Afterglow in the sunset, the sky became purple. At this time, many people gathered on the Parliamentary Street Bridge in Austin, Texas, USA, and the visitors were still in a constant stream. People move their families, parents raised their children high over their shoulders, waiting for the magnificent bat travel landscape. With the sunset, the breeze stopped. Suddenly, a burst of “buzzing” sounds followed by a constant movement of groups, followed by one after another, with tens of thousands of bats circling