But, unlike the cores of the inner planets, the Moon's core contains little or no iron, while the typical planet-forming materials were quite rich in iron.
但是，与内行星的核心不同，月球的核心几乎不含铁，而典型的行星形成物质则富含铁。
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。
It's all in service to the question: What does this oddball planet tell us about how the solar system, especially the rocky inner planets, evolved?
所有涉及这项任务的人员都想问这样的问题：在关于太阳系，特别是内部为岩石的行星，是如何形成的这个问题上，这个古怪的星球将告诉我们什么呢？
They cross in front of their star about once every 19.24 and 38.91 days, but those times can vary by up to 4 minutes for the inner planet and 39 minutes for the outer one.
它们每次经过恒星面前的时间，分别大约是19.24天和38.91天，但这个时间间隔有一定的变动范围，里层行星在4分钟范围内，外层行星在39分钟范围内。
The planet Mercury is the smallest of the inner planets (4, 880 km/3, 032 mi in diameter), and the closest to the Sun (58 million km/36 million mi - or 3.2 light minutes).
水星在地内行星中是最小的行星（直径4 880公里），同时也是靠太阳最近的行星（5800万公里）。
Opportunity and sister robot Spirit have been probing the red planet since early 2004, finding evidence of ancient water, and sending breathtaking images across the inner Solar System.
机遇号和她的同胞机器人勇气号自从2004年初就开始探索这颗红色的星球了，找到了古老的水的证据，并且穿越内太阳系发送除了令人窒息的图片。
Mercury, planetary scientists knew, is uncommonly dense - most likely because its inner core of iron is very large relative to the rest of the planet.
行星科学家们知道，水星密度极高——最可能的原因是相对于其它部分水星内核中铁含量非常巨大。
Let your inner vision be your guide and empowerment, for it is this vision that belies your destiny and that of your planet.
让你内在的全景成为你的向导和授权，因为正是这全景证明了你们和你们星球的命运是被扭曲的。
When you couldn't open your mouth till the first two years on planet earth, inner voice is the one through which you interpreted and understood things.
在来到这个世界的最初的两年里，我们还不能开口讲话，心灵是我们理解事物的一种方式。
Will the new WISE probe, just launched and due to map the skies in infrared, now "discover" Planet X sitting right next to us in the inner solar system.
是不是新发射的在红外频域扫描天空的WISE探测器现在将“发现”X行星正位于内太阳系里我们的身畔？
When you couldn't open your mouth till the first two years on planet earth, inner voice is one through which you interpreted and understood things.
在来到这个世界的最初两年里，你还不能开口讲话，心灵是你传递和感悟事物的一种方式。
The inner tooth planet reducer is a new type transmission system.
内齿行星减速器是一种新型传动系统。
The inner tooth planet reducer is a new type transmission system.
内齿行星减速器是一种新型传动系统。
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