原行星
yuán xíng xīng
- protoplanet;original planet
原行星
原行星[yuán xíng xīng]
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平静的原行星进化到富有戏剧性的状态。
The peaceful evolution of the protoplanets reached a more dramatic phase .
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这些就是原行星，现在的行星正是从它们演化而来的。
These were the protoplanets from which the planets of the present developed .
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和原行星状星云成协的致密反射星云
Compact Reflection Nebulae Associated with Protoplanetary Nebulae
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原行星是一个巨大的天体。
The protoplanets were huge affairs .
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研究灶神星或许有助于得到早期太阳系形成的线索，因为灶神星这个不同寻常的世界也许是残留的最大原行星之一。
Studying Vesta may give clues to the formative years of our early Solar System , as the unusual world may be one of the largest remaining protoplanets .