1·Hirst said the tooth, believed to be a child's incisor, may have come from incidents he had at school.
赫斯特说,据信是儿童门牙的这个牙齿,可能来自于他在学校念书时所发生的一些事。
2·The canine is impacting on the incisor.
犬牙和门牙挤压在一起。