Read Edit View history 通风管 tōngfēngguǎn air duct Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 通风管/通風管 · tōngfēngguǎn · air duct 2026/03/04 通风管 / 通風管 tōngfēngguǎn air duct ventilation duct 通风管需要定期清理。 verb created sense Mar 4, 2026, 02:25 AM