欧氏管 ōushìguǎn eustachian tube Definitions Defs Origin Strokes Stroke Words Sentences Sents 欧氏 歐氏 ōushì Euclid (bound form) Euclid; Euclidean; abbreviation for 欧几里得 ōujǐlǐdé管 guǎn noun tube tube; pipe; cylinder; any long, hollow cylindrical object
