
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,指位于口腔前部的扁平牙齿,主要用于切割食物。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.”
(他在打曲棍球时磕到了前门牙。)
upper incisors — 上门牙,特指上颌前部的切牙,在微笑时最显眼的位置。
“Her upper incisors were perfectly aligned after braces treatment.”
(经过牙套矫正后,她的上门牙排列得非常整齐。)
lower incisors — 下门牙,位于下颌前部,通常比上门牙小而窄。
“The dentist recommended flossing between the lower incisors daily.”
(牙医建议每天用牙线清洁下门牙之间的缝隙。)