In much of the animal world, night is the time set aside for sleep.
在许多动物世界里，夜晚是用来睡觉的。
At that time, Europeans flocked to the New World in search of raw materials and precious commodities, like animal fur.
那时，欧洲人涌入新大陆寻找原材料和珍贵的商品，比如动物皮草。
It is the first time in the world that this has been achieved using somatic cells (cells that are not sperm or egg cells) from any animal with hooves (known as ungulates).
这是全世界首次使用任何有蹄脚的动物(被称为有蹄类动物)的体细胞(不是精细胞或卵细胞的细胞)实现了这一成果。
It is the first time in the world that this has been achieved using somatic cells (cells that are not sperm or egg cells) from any animal with hooves (known as ungulates).
这是全世界首次使用任何有蹄脚的动物(被称为有蹄类动物)的体细胞(不是精细胞或卵细胞的细胞)实现了这一成果。
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