Dentine

['dɛntin]

解释:

(noun.) bone (calcified tissue) surrounding the pulp cavity of a tooth.

(noun.) a calcareous material harder and denser than bone that comprises the bulk of a tooth.

查理校对--From WordNet

解释:

(n.) The dense calcified substance of which teeth are largely composed. It contains less animal matter than bone, and in the teeth of man is situated beneath the enamel.

克劳迪娅手打

解释:

n. the substance of which the tooth is formed under the enamel.

桃乐茜编辑