Dolly the sheep,the world's first cloned mammal,is dead.She was six.
Dolly the sheep,the world's first cloned mammal,is dead.She was six.
世界上第一只克隆哺乳动物--绵羊多莉死了，6岁。
Dolly the sheep,the world's first cloned mammal,is dead.She was six.
世界上第一只克隆哺乳动物--绵羊多莉死了，6岁。