蛇在地上移动时,总是仰起头,分叉的舌头从嘴里向外不停伸缩,这是用舌头探索周围的情况。因为蛇的舌头能接受空气中的化学分子,并能正确判断出近旁是什么物体。青蛙的舌头很奇特,舌根长在下颌前方,舌尖则伸入到口腔内。当捕捉小虫时,舌头会立即倒弹出来粘住小虫,然后翻回口腔,把 When the snake moves on the ground, it always looks up, and the bifurcated tongue keeps stretching out of its mouth. This is where the tongue explores the surroundings. Because the snake's tongue can accept chemical molecules in the air, and can correctly determine what is next to the object. The frog tongue is very strange, the tongue grows in front of the jaw, the tongue extends into the mouth. When catching the bug, the tongue will immediately pop up stick to the bug, and then turned back to the mouth, put