我牙齿下排的右数第二颗牙齿上面有一个牙洞。可别小看这个牙洞,它引发了很多意想不到的事情。我吃饭时,一些饭菜塞进了牙洞里面,可不一会儿,这些饭菜竟无影无踪。这是怎么回事?后来我喝了一大口开水,竟然“水土30 The second tooth on the right of the lower row of my teeth has a hole in it. Do not underestimate this hole, it triggered a lot of unexpected things. When I was eating, some food stuffed into the cavity of the tooth, but in a matter of moments, the food was gone. What’s going on? Later, I drank a big mouth water, even ”30 soil and water