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It had become an issue since the cloning of Dolly the sheep in Scotland.
自苏格兰的多利羊被克隆后，这已成为一个争议性问题。
youdao
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Cloning? Yes, of course. Dolly the Sheep, remember?
克隆？当然你还记得多利羊吧？
youdao
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Cloning? Yes, of course. Dolly the Sheep, remember?
克隆？当然你还记得多利羊吧？
youdao