在行星上
planet───n.(Planet)人名；(法)普拉内；(西、葡)普拉内特；n.行星
clockwork planet───发条行星
Mars planet───火星行星
giant planet───[天]巨行星
planet trees───行星树
coruscant planet───科洛桑行星
brightest planet───最亮的行星
planet bibi───阿姨的星球
flaxy planet───亚麻星球
Hooke observed a reddish spot on the surface of the planet.───胡克观察到了那颗行星表面的一个微红的斑点。
In a dramatic act, more at home in a Planet of the Apes film script than real life, LaFarge entered his enclosure knowing he would attack.───这种过激的行为甚至让人觉得《猿人星球》电影剧本中的某些场景甚至更贴近现实，事实上，拉法基在进入围栏之前就知道尼姆会做出攻击行为。
Leo's royal star Regulus and red planet Mars appear in a colorful pairing just above the horizon in this starry skyscape.───狮子座的王者之星轩辕十四和红色行星火星，在这地平线上繁星闪耀的天空中交相辉映。
It seems as though they dwelt in a planet much further from the sun than ours.───他们好象是住在一个比我们离太阳更远的星球上。
He said : "We live in a planet as a boat, Everyone on board should join forces. "───他说：“我们生活的星球就像一艘船，船上的每个人应该同舟共济。”
Only if temperatures in a planet's interior are high enough for it to have a fluid metal core can it develop a magnetic field.───只有当行星内部的温度高到足以形成流体金属核时，它可以形成磁场。
Ironically, it was another discrepancy in a planet's orbit that helped to point out flaws in Newton's theory.───具有讽刺意味的是另一个差异在地球的轨道，有助于指出缺点牛顿的理论。
Composition problem of rotations about parallel axes is often encountered in mechanical engineering. For instance, the planet gear wheel in a planet gear mechanism has plane motion.