Fortunately, some fishes can change their secondary teeth to match a new diet over several years.
幸运的是,有些鱼类能在几年的时间内将第二组牙齿换新,以配合新的饮食。
单词 | Secondary tooth |
释义 |
Secondary tooth
原声例句
双语版 TED-Ed 演讲精选 Fortunately, some fishes can change their secondary teeth to match a new diet over several years. 幸运的是,有些鱼类能在几年的时间内将第二组牙齿换新,以配合新的饮食。 日常生活医学科普 Most adults have 32 teeth called permanent or secondary teeth; 8 incisors, 4 canines, also called cuspids, 8 premolars, also called bicuspids, 12 molars, including 4 wisdom teeth whereas children have 20 teeth. 大多数成年人有 32 颗牙齿,称为恒牙或副牙;8 颗门牙,4 颗尖牙也叫犬牙,8 颗前磨牙,也称为双尖牙,12 颗臼齿,包括 4 颗智齿,而儿童有 20 颗牙齿。
英语百科
Permanent teeth![]() Permanent teeth or adult teeth are the second set of teeth formed in diphyodont mammals. In old world simians (including humans), there are thirty-two permanent teeth, consisting of six maxillary and six mandibular molars, four maxillary and four mandibular premolars, two maxillary and two mandibular canines, four maxillary and four mandibular incisors. |
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