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。
Since the clone sheep "Dolly" was born, the arguments about nuclear transplantation were never stopped.
自从核移植产生第一头克隆羊多莉以来，对其应用一直存在争议。
Six years have already passed since my friend went away from me, with his sheep.
我的朋友带着他的小羊已经离去六年了。
One of the six domestic animals, the sheep has been with man since ancient times.
羊为六畜之一，自古至今一直与人相伴。
One of the six domestic animals, the sheep has been with man since ancient times.
羊为六畜之一，自古至今一直与人相伴。
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