A flat, thin piece of metal or earthenware upon which a picture or design is enameled or painted, used chiefly as a wall ornament.

装饰用的薄金属板或瓷片(主要作为壁饰)。

Brooch or similar ornament.

胸针；徽章。

Accumulation that stains the teeth, formed form bacteria and mucus in the saliva.

(唾液中的细菌和黏液造成的)齿痕。

Abnormal deposit on the wall of a blood vessel.

血管壁上不正常的沉淀物。