牙齿

• Pinyin: yá chǐ
• Desglose de hanzi: 牙 = pictographic (interlocking teeth shape, extended to mean ivory/tusk); 齿 = 止 + tooth-row components (pictographic — mouth with a row of teeth)

Significado

Diente; dientes.

The neutral, everyday word for teeth. 牙 can also stand alone colloquially. 齿 is more literary and formal. Together 牙齿 is the standard term used in medical, educational, and everyday contexts. Related terms: 乳牙 (baby teeth), 恒牙 (permanent teeth), 智齿 (wisdom tooth), 牙龈 (gums), 蛀牙 (tooth decay/cavity).

Ejemplos

1. 口腔医生建议每天至少刷两次牙齿，并配合使用牙线以彻底清洁残留于牙缝之间的食物残渣。
2. 儿童换牙期间，乳牙逐渐脱落而恒牙相继萌出，家长应定期带孩子检查牙齿发育状况及咬合关系。
3. 长期吸烟不仅严重损害肺部功能，还会导致牙齿逐渐变色、牙龈萎缩，对整体口腔健康造成不可忽视的危害。

Guía de uso

Contexto: health, medicine, daily life, education

Tono: neutral

Correcto

• 定期进行专业洁牙不仅能有效预防龋齿和牙周病，还能让牙齿保持洁白亮泽的良好状态。(Regular professional teeth cleaning not only effectively prevents cavities and periodontal disease but also keeps teeth in a clean, bright, and healthy condition.)
• 运动员在进行接触性运动时应佩戴护齿器，以防止因碰撞导致牙齿受损或脱落。(Athletes should wear a mouthguard during contact sports to prevent damage to or loss of teeth caused by impacts.)

Incorrecto

• 她有很美丽的牙齿们 — 牙齿 is already a plural concept in Chinese and does not take 们; simply say 她有一口整齐洁白的牙齿 to describe beautiful teeth naturally

Origen e historia

牙 (tooth/ivory — pictographic character resembling interlocking teeth) + 齿 (teeth — shows a row of teeth with 止 at the base)

Contexto cultural

Época: Modern

Generación: All ages

Contexto social: Universal