Is there a core in the planet?

这个星球有核心吗？

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When a large body strikes a planet or moon, material is ejected, thereby creating a hole in the planet and a local deficit of mass.

当一个大型天体撞击行星或月球时，物质会被抛射出去，从而在行星上形成一个洞，造成局部质量不足的现象。

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The news is constantly reporting what human endeavours have caused extensive damage to flora and fauna in the planet.

新闻正不断报道人类给地球动植物群造成严重破坏的所作所为。

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Small changes in the movement of Neptune led several astronomers to believe that an undiscovered planet was affecting Neptune's orbit.

VOA: special.2010.07.11

Earlier this summer I was at a smelter in Japan, the largest titanium smelter on the planet.

早在这个夏天我去了日本一家熔炼厂，那是全世界最大的熔炼厂。

麻省理工公开课 - 固态化学导论课程节选

There are three places on the planet that have the high energy physics equipment in order to make these, and these are the three places.

在地球上有三个地方,有高能物理设备,为了制造出这些元素，有三个地方。

麻省理工公开课 - 固态化学导论课程节选

In The Planet Versus Monsanto, Forbes made Monsanto the 2009 Forbes company of the year.

FORBES: Monsanto Shares Get a Shakedown. Is the Worst Still To Come?

Other spacecraft sailed blindly past Mars or burned up in the planet's atmosphere during landing attempts.

MSN: History littered with failed Mars probes

This is what was borne out in the Planet Money podcast featuring my daughter.

FORBES: Seven Economist Mistakes About Parenting