例句
	
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			Small meteorites have left impact craters all over the planet’s surface.
			这个行星的表面布满了小块陨石留下的撞击坑。
			
		
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			Previous, indirect detections of more than 300 exoplanets had provided breakthroughs of their own.
			此前, 对300多颗系外行星的间接观测都分别取得了突破.
			
		
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			The orbits of such faint asteroids are not yet known.
			但是对于这样暗的小行星的轨道,迄今尚未弄清.
			
		
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			Small meteorites have left impact craters all over the planet's surface.
			这个行星的表面布满了小块陨石留下的撞击坑.
			
		
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			There was no gainsaying the astronomer's knowledge about the planets.
			这位天文学家对于行星的知识是毋庸置疑的.
			
		
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			Stellar passings can perturb the orbits of comets.
			行星的运行会使彗星的轨道发生扰动.
			
		
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			Long long ago, we knew the periodic motion of a planet.
			很久以前, 我们就知道行星的周期运动.
			
		
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			We are talking about the globularity of the planets.
			我们在谈论行星的球状.
			
		
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			The exoplanet's atmosphere condenses out minerals such as enstatite, corundum, spinel, and wollastonite.
			这颗系外行星的大气冷凝后产生矿物,如:顽火辉石 、 刚玉 、 尖晶石和硅灰石.
			
		
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			First, we know that the planets all orbit close to the earth's orbital plane, the ecliptic.
			首先, 我们知道所有行星的轨道都很靠近地球的轨道平面――黄道面.