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And unfortunately, in order to get those stem cells, that requires killing the embryo.
而不幸的是，要想得到这些干细胞，就需要杀死胚胎。
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- 来自原声例句
And unfortunately, in order to get those stem cells, that requires killing the embryo.
而不幸的是，要想得到这些干细胞，就需要杀死胚胎。
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