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VOA慢速英语:中国科学家宣称首个基因编辑婴儿出生
2018-11-27来源:和谐英语
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unethical – adj.morally bad
standard – n.level of quality considered acceptable
sperm – n.male reproductive fluid
clone – v.an exact copy of a plant or animal made by scientists removing one of its cells
justifiable – adj.having a good reason
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