出典:Wiktionary
mouth ulcer (複数形 mouth ulcers)
口内炎.
a mouth ulcer
the oral cavity
口腔.
the oral cavity
the nasal cavity
鼻腔.
the nasal cavity
Got a mouth ulcer
a foul odor originating from the mouth
the nostrils
the septum
鼻窩.
the nasal fossae
the dirt in the nose
the oral mucous membrane