... Duck,Cover and Hold 躲避、盖上和原地不动 Learning About the Solar System 了解太阳系 A Clever Reply 聪明的答复 ...
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在过去，这些天文现象被用来帮助科学家们了解太阳系的大小和行星之间的距离。
In the past, these events were used to help scientists understand the size of the solar system and the distance between planets.
科学家希望探测器对“系川”小行星的探访会给他们带回有关小行星构造的信息，并进一步得以了解太阳系。
Scientists hope the probe's visit to Itokawa will give them information about the formation of asteroids and thus the solar system.
我将介绍陨石的不同类型，以及我们能够从中了解到的有关地球和太阳系的形成的知识。
I wanna go over the different types of meteorites, and what we've learned from them about the formation of Earth, and the solar system.
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