A so-called "planetary nebula" is a confusing misnomer because these clouds have nothing to do with planets. As a medium-size star nears the end, it puffs out into a red giant — about 100 to 1,000 times its original size — eventually engulfing the space around it, including any nearby worlds.
史密斯表示，這次誕生證明，那些被告知沒有子宮的女孩和年輕女性，如今可以對親自懷孕生子抱持希望。
，这一点在爱思助手下载最新版本中也有详细论述
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被分装售卖的山姆蛋糕。南方周末记者贾梦雅｜摄