But it has been luckier than vesta-and almost every other asteroid-in avoiding collisions, and has thus not yielded a huge crop of meteorites for Earth-bound scientists to examine.
但在避免碰撞方面，它比灶神星要幸运得多——几乎比其它任何小行星也都幸运，因此它没有产生可供地球科学家研究的大量陨石。
Launched in 2007, Dawn is the first mission to explore Vesta and Ceres, the two largest members of the asteroid belt.
“黎明号”于2007年发射升空，是首个探测小行星带两颗最大天体灶神星和谷神星的飞行器。
If all goes to plan, then on July 16th Dawn, the largest robotic probe ever launched by America's space agency, will drop into orbit around Vesta, the second-largest member of the asteroid belt.
如果一切按计划行事，那么，7月16日，美国航天机构有史以来发射最大的机器人探测器——“黎明”号——将顺便进入小行星带第二大成员——灶神星——的轨道。
After a year of studying Vesta, Dawn is scheduled to leave orbit and, in 2015, approach the only asteroid-belt object that is larger: Ceres.
一年后，黎明号探测器将离开灶神星的轨道，计划在2015年到达谷神星，它是小行星带中唯一一颗比灶神星大的小行星。
After a year of studying Vesta, Dawn is scheduled to leave orbit and, in 2015, approach the only asteroid-belt object that is larger: Ceres.
一年后，黎明号探测器将离开灶神星的轨道，计划在2015年到达谷神星，它是小行星带中唯一一颗比灶神星大的小行星。
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