British biological geneticists Wilmut cloned a sheep successfully. the birth of the cloned sheep "Dolly" shocked the world.

英国生物遗传学家维尔·穆特成功地克隆出了一只羊。克隆羊“多莉”的诞生震惊了世界。

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The first mammal to be cloned successfully…was Dolly the sheep.

第一只从成体细胞中克隆成功的哺乳动物是多莉羊。

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In the more than three years since scientists in Britain cloned the sheep Dolly, other researchers have successfully cloned sheep, cows, goats, pigs and mice.

CNN: U.S. lawmakers debate limits on human cloning