Read Edit View history 原肾管 yuánshènguǎn protonephridium Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 原肾管/原腎管 · yuánshènguǎn · protonephridium 2026/03/04 原肾管 / 原腎管 yuánshènguǎn protonephridium protonephridium (invertebrate anatomy) 涡虫的排泄系统由原肾管组成。 noun created sense Mar 4, 2026, 02:25 AM