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- Mars is the last of the inner planets, the ones closest to the sun. 火星是最后一颗内行星。内行星指的是离太阳最近的行星。
- "The heavy bombardment of the inner planets by comets may have brought less prebiotic material to the inner solar system than we thought," said Boehnhardt. 贝哈特说：“由慧星构成的内行星的剧烈爆炸，会比我们想象的要少的生命起源物质来到太阳系内部。”
- Mercury and Venus are the inner planets because their orbits are inside the orbit of the Earth. 由于水星和金星的轨道在地球轨道之内,所以称为。
- If researchers can confirm that the lunar cataclysm did indeed occur, the discovery would have profound implications for the history of all the inner planets. 如果研究人员能证实月球灾难确曾发生，这项发现便对所有内行星的历史深具意义。
- Indeed, the emerging synthesis explains why most of the inner planets are ringless: they lack large retinues of satellites to provide ring material. 透过逐渐浮现的综合观点，我们就可以解释为什麽内圈的行星没有环：它们缺少够份量的随伴卫星以提供行星环材料。
- In this case, the lunar record could indeed serve as a guide to the interpretation of cratering on inner planets such as Mars. 在这情况下，月球的记录确实能做为解释内行星（如火星）撞击的指标。
- The migration of Jupiter and Saturn could have turned asteroids in the early Solar System into missiles that pelted the inner planets. 太阳系早期，木星和土星的迁移可能把小行星变成攻击内行星的导弹。
- The dividing line between the bright and shaded regions of the disk of the moon or an inner planet. 明暗界线:月亮或内行星亮和暗的区域之间的分界线。
- An automated transfer feeder driven by inner planet gear wheel 一种内啮合行星式自动送料机构
- three-shaft Xing-type gear transmission with inner planet gear 三轴式星型内齿行星传动
- three-shaft Xing-type transmission with inner planet gear 三轴式星形内齿传动
- three-shaft gear transmission with inner planet gear 内齿行星传动
- I was allowed once into his inner sanctum. 我有一次获准进入他的内室。
- The sun and the planets are heavenly bodies. 太阳和行星都是天体。
- Life on other planets is a possibility. 其他行星上有生命是可能的。
- Her artificial gaiety disguised an inner sadness. 她以矫揉造作的快乐掩饰著内心的悲痛。
- Saturn is the planet sixth in order from the sun. 土星是依次离太阳的第六颗行星。
- The inner layer of the wall of a spore. 孢子内壁孢子壁的内层
- Comets move around the sun like planets, but in long oval course. 彗星象行星一样绕太阳运转，然而其轨道呈狭长的椭圆形。
- It's time to satisfy my inner man. 现在该是填饱肚子的时候了。
