以下为句子列表：
英文: For panspermia to occur, however, microorganisms need to survive not only ejection from the first planet and atmospheric entry to the second but the interplanetary voyage itself.
中文: 然而，胚种说真要发生，微生物除了从第一颗行星喷发、进入第二颗行星的大气时必须幸存之外，还要能在整个行星际旅程中保住小命。
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英文: Researchers plan to evaluate the likelihood of panspermia by studying whether microorganisms can survive an interplanetary journey.
中文: 研究人员打算研究：微生物是否可以在星际旅行中存活，并据以评估胚种说存在的可能性。
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英文: Scientists who study panspermia used to concentrate only on assessing the basic plausibility of the idea, but they have recently sought to estimate the probability that biological materials made the journey to Earth from other planets or moons.
中文: 研究胚种说的科学家过去只集中在评估这个概念原则上是否合理，但他们近来已尝试估算生物体自其他行星或卫星旅行到地球的可能性。
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英文: The panspermia hypothesis posits that living cells or their precursors could have emerged on another planet or moon billions of years ago and hitched a ride to Earth on a meteorite.
中文: “胚种假说”假设：活细胞或其前驱物可能于数十亿年前发源自其它行星或月球上，并且搭陨石的便车来到地球。
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