
好词典

源自拉丁语 'incidere'(意为切割),通过法语 'inciseur' 演变而来,指用于切割的牙齿。
❶ 门牙,指人或动物口腔前部用于切割食物的牙齿,通常呈扁平状且边缘锋利。人类通常有上下各四颗门牙。
“The rabbit's incisors are constantly growing.”
(兔子的门牙会不断生长。)
“He chipped his front incisor while playing hockey.”
(他在打曲棍球时磕坏了前门牙。)
central incisor — 中切牙,指位于口腔正中最中间的两颗门牙,上下颌各有一颗。
“Her central incisors were perfectly aligned.”
(她的中切牙排列得非常整齐。)
lateral incisor — 侧切牙,指位于中切牙旁边的门牙,比中切牙稍小。
“The gap between his lateral incisors gave him a distinctive smile.”
(他侧切牙之间的缝隙让他的笑容很有特点。)