自苏格兰的多利羊被克隆后，这已成为一个争议性问题。
It had become an issue since the cloning of Dolly the sheep in Scotland.
自从1997年多利羊被克隆以来，威斯苏森的电话一直响个不停，人们打电话希望能复制他们的猫、狗、牛和马。
Ever since Dolly the sheep was cloned in 1997, Westhusin's phone has been ringing with people calling in hopes of duplicating their cats and dogs, cattle and horses.
多利羊就是首次通过这一技术安全诞生的。
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