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.