planet

• Planets revolve about the sun and rotate on their axis .
  行星在围绕太阳旋转的同时，也绕着它们的自转轴自转。
• Venus, earth, and other planets also perturb mercury's motion .
  金星，地球和其他行星也使水星的运动受到摄动。
• We don't require additional knowledge as to which of the planets is older .
  我们无需再知道哪一颗行星更老些。
• Much of the sunlight bombarding the planet is absorbed by the oceans .
  海洋吸收了射到这颗行星上的大部分阳光。
• The final solar convulsions will wipe out all life on the planet .
  太阳的最后灾变将把地球上的一切生命消灭干净。
• Step edges that are parallel to the planet radius are coated symmetrically .
  与行星径向平行的台阶边缘被对称淀积。
• Many of the planets are no doubt inhabited by some form of advanced life .
  许多行星上不容置疑地存在着高级的生命形式。
• Consequently, there is a strong possibility that life can arise on other planets .
  由此可见，其他行星上极可能有生命产生。
• It is probable that life animates all the planets revolving round all the stars .
  生命可能为一切围绕恒星旋转的行星注入活力。
• These were the protoplanets from which the planets of the present developed .
  这些就是原行星，现在的行星正是从它们演化而来的。