It's a lancet fluke: it's a little brain worm — a parasitic brain worm — that has to get into the stomach of a sheep or a cow in order to continue its life cycle.

这是一种枝双腔吸虫(lancet fluke)，它是一种很小的活在大脑里的虫子，一种大脑的寄生虫，它必须要进入到绵羊或奶牛的肚子里才能继续活下去。

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He said that even Dolly, the famous sheep that was the first mammal to be cloned, suffered from obesity and brain abnormalities.

他说，甚至第一只克隆哺乳动物，即著名的克隆羊多莉，也患有肥胖症和脑异常。

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Interfere with it when the developing brain is casting out the two bulges of nerve tissue that become the eyes, and you get cyclopean sheep.

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