1. That's when a scientist in Denmark separated cells from a sheep's embryo (胚胎).
    但1984年，一位丹麦科学家从一只绵羊的胚胎中分离出了细胞。

2. Denmark is a kingdom.
    丹麦是个王国。

3. Denmark, Germany, the Netherlands, Britain, and America have large wind power projects.
    丹麦、德国、荷兰、英国和美国已开发了大型风力发电项目。

4. Several countries, including Britain, Denmark, Germany, and Australia, have made all scientific work on cloning humans illegal.
    有些国家，包括英国、丹麦、德国和澳大利亚，都宣布克隆人类的研究工作是非法的。