环球慢速英语 第344期:星尘号宇宙飞船(2)

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voice 1: Today's Spotlight is on the Stardust space vehicle. The Stardust collected materials from space. Scientists were very happy to see the Stardust return to earth. They were excited to study the materials collected inside. Why do scientists believe these materials are so important?
声音1：今天的重点报道节目就聚焦星尘号宇宙飞船。星尘号从太空收集了材料。科学家很高兴看到星尘号返回地球。他们对研究星尘号所收集到的材料感到兴奋不已。为什么科学家认为这些材料如此重要？

voice 2: