在荷兰的一个小山村里,曾经发生过这样一件怪事。一个兽医给一头老牛治病,这头牛一会儿抬起头,一会儿低下头,蹄子不断地蹬着地,好似热锅上的蚂蚁坐卧不安。几日来,它吃不下饲料,肚子却溜圆,用手指一敲“咚咚”直响。兽医诊断认为这头牛肠胃胀气。他为了检查牛胃里的气体是否能够通过嘴排出来,便用探针插进牛的咽喉。万万没有想到的是,当他 In a Dutch village, there has been such a strange thing. A veterinarian treats an old cow, while the cow looks up for a moment, while bowing his head for a moment, his hooves continually pedaling, as if the ant on the hot pan sits uncomfortable. In recent days, it can not eat the feed, but the stomach slipped round, knocking with your fingers “pound ” ring. The veterinarian diagnoses this cow as flatulence. In order to check whether the gas in the cow’s stomach can be discharged through the mouth, he inserts the probe into the cow’s throat. Never imagined that when he