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| 1. | But too few people carry the gene to assure its long-term survival. |
| 但是携带这种基因的人为数太少，这种特质因此无法长期存在。 |
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| 2. | Nature magazine reported that the scientists used a virus to carry a gene that changed the balance of |
| 《自然》杂志报道，科学家们使用携带基因的病毒来改变钾的平衡。 |
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| -- 来源 -- 交互式慢速英语-冬季号 - Biological Pacemaker |
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