Read Edit View history 鸟胺酸 niǎo'ànsuān ornithine Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 鸟胺酸/鳥胺酸 · niǎo'ànsuān · ornithine 2026/03/04 鸟胺酸 / 鳥胺酸 niǎo'ànsuān ornithine (Tw) ornithine 鸟胺酸是一种在尿素循环中起重要作用的氨基酸。 noun created sense Mar 4, 2026, 02:25 AM