Read Edit View history 蝶窦 diédòu sphenoidal sinus Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 蝶窦/蝶竇 · diédòu · sphenoidal sinus 2026/03/04 蝶窦 / 蝶竇 diédòu sphenoidal sinus sphenoidal sinus 蝶窦位于鼻腔后方，是鼻窦中位置最深的一个。 noun created sense Mar 4, 2026, 02:25 AM