Read Edit View history 防毒通道 fángdútōngdào protective passage Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 防毒通道 · fángdútōngdào · protective passage 2026/03/04 防毒通道 fángdútōngdào protective passage protective passageway 这种特殊的防毒通道可以有效隔绝有害气体。 created sense Mar 4, 2026, 02:25 AM