火星往返之旅（讲解版）| E0507

The US and European space agencies are edging towards a joint mission to bring back rock and soil samples from Mars. Nasa and Esa have signed a letter of intent that could lead to the first "round trip" to another planet. The move was announced as a meeting in Berlin, Germany, discussing the science goals and feasibility of the mission.

agency: 机构；组织
edge towards: 推进；进展
joint mission: 联合任务
sample: 样本
letter of intent: 意向书
feasibility: 可行性

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什么是暴虐版？
暴虐版语音是夏老师以意群为单位进行语音示范。
1. 每个意群示范7遍
2. 在每次语音示范后，会留出足够的空白时间供各位进行跟读和练习。

暴虐版使用方法：
1. 小伙伴们需要先掌握生词的发音方式和规律（练习耗时，因人而异）
2. 再通过先单词后意群的方式跟随暴虐版进行练习
3. 通过反复的朗读，让口腔肌肉熟悉且记住意群的流利和滑动感，不断提升自己语音语调，连读技巧，意群的把握。