| 1. | 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。 |
| 2. | Until about 10 years ago we did not know the true sizes of asteroids very well .
一直到十年前为止，我们还不能确切知道小行星的真正大小。 |
| 3. | Some of the orbits of the asteroids intersect the orbit of earth
有些小行星的轨道与地球的轨道相交。 |
| 4. | Know the importance of discovery of asteroids and how they can affect earth
识小行星的发现和对地球的影响 |
| 5. | You can see that the rough shape of the asteroid above is nearly spherical
你可以看出上面这颗小行星的大致形状接近于球形。 |
| 6. | However , some asteroids , known as jupiter trojans , share the orbit of jupiter . they are located about 60 degrees from jupiter
这些称为特洛伊小行星的天体，会维持在木星前后约60度。 |
| 7. | Based on the scheme of exploration ivar asteroid , this dissertation studied the mission planning technology and system design
本文基于探测ivar小行星的设计方案,对深空探测器自主任务规划方法和系统设计进行了研究。 |
| 8. | If catastrophe were to befall humanity ? be it plague , nuclear war or an asteroid striking the earth ? what provision could be made for the survivors
如果灾难? ?瘟疫，核战争，还是小行星的撞击? ?降临于人类，生还者需要什么？ |
| 9. | Next is a search for near - earth objects , a topic that concerns us all , given that asteroids will one day strike our planet
接下来的目标是对近地星体的搜寻；假设我们的星球有一天将受到小行星的撞击，那麽这个主题就与所有人都相关。 |
| 10. | Like in tutorial i , measure the position of the asteroid by clicking on it . the verification dialog , also known from tutorial i , will be displayed
像在指南1中那样，你可以点击鼠标来测量小行星的位置。弹出的对话框也和指南1中的一样。 |
