行走在茂密的树林中,经常会听到“梆梆、梆梆”连续敲打树干的清脆声响,这是啄木鸟在为树木做“身体检查”,只要听到声音有些异样,便知道其树的病因,于是,立即施行“外科手术”,一顿猛敲,将患处敲成一个小洞,把隐 Walk in the dense woods, often hear “梆 梆, 梆 梆” continuous tapping the trunk of the crisp sound, which is woodpecker doing “physical examination” for the trees, as long as the sound is heard some strange, they know the cause of the tree , So, immediately “Surgical operation”, a fierce knock, the affected area knocked into a small hole, hidden