Read Edit View history 额窦 édòu frontal sinus Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 额窦/額竇 · édòu · frontal sinus 2026/03/04 额窦 / 額竇 édòu frontal sinus frontal sinus 他的额窦发炎了，头疼得很厉害。 created sense Mar 4, 2026, 02:25 AM