论文部分内容阅读
夏天,我常在小河或池塘的水面上看到低飞的蜻蜓不时用尾巴轻点水面,它为什么要点水呢?难道它在练习轻功吗?
In summer, I often see the low flying dragonfly on the water of a small river or a pond. From time to time, I light the surface with a tail. Why does it require water? Is it practicing light work?