常见例句Its remnants form the Crab Nebula.它的殘餘物組成了蟹狀星雲。Today, the Crab Nebula is still expanding and it will eventually dissolve in the interstellar gas cloud nearby.蟹狀星雲仍然在膨脹最終會溶入星際物質而消散。 返回 crab nebula