美国宇航局“毅力”号火星车首次在火星取氧
日期:2021-04-24
Words in This Story
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mission – n. a flight by an aircraft or spacecraft to perform a specific task
extract – v. to get something by pulling it out, forcing it out, etc. : the act of extracting something
microbe – n. an extremely small living thing that can only be seen with a microscope; micro-organisms
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