planum的用法和樣例：
例句
- I have seen cats with squamous cell carcinoma lose the pigment in the nasal planum as an early sign.
我看到過貓患有的鱗狀細胞腫瘤的初期會在鼻平面上出現色素減退。 - There are also usually skin sores around the edges of the nasal planum, on the bridge of the nose, around the eyelids or places like that.
通常在鼻平面的邊緣會有皮膚發炎，或是在鼻梁，眼皮的位置等等。
