Read Edit View history 旋臂 xuánbì spiral arm Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 旋臂 · xuánbì · spiral arm 2026/03/04 旋臂 xuánbì spiral arm spiral arm 科学家观测到了该星系的旋臂结构。 noun created sense Mar 4, 2026, 02:25 AM