仙女座大星云仙女座大星雲 great nebula in Andromeda or Andromeda galaxy M31
猎户座大星云獵戶座大星雲 the Great Nebula in Orion M42
猎户座流星雨獵戶座流星雨 1.Orionids2.Orionid meteor shower
笛卡儿坐标系笛卡兒座標系 (math.) Cartesian coordinate system
宁拆十座庙，不毁一桩婚寧拆十座廟，不毀一樁婚, rather destroy ten temples than a single marriage (idiom)
(Tw) chairman (of a board of directors)
(Tw) priority seat (on a bus etc)