1. 极为相似的人(或事物)
    If someone or something is a clone of another person or thing, they are so similar to this person or thing that they seem to be exactly the same as them.

    e.g. Tom was in some ways a younger clone of his handsome father...
           汤姆某些地方长得和他那帅气的父亲一模一样，只是年轻一些。
    e.g. Designers are mistaken if they believe we all want to be supermodel clones.
           要是设计师认为所有人都想和超模一样，那他们就错了。

2. 克隆动物(或植物);无性繁殖动物(或植物)
    A clone is an animal or plant that has been produced artificially, for example in a laboratory, from the cells of another animal or plant. A clone is exactly the same as the original animal or plant.

clone在线翻译

3. 克隆;以无性繁殖技术复制
    To clone an animal or plant means to produce it as a clone.

    e.g. The idea of cloning extinct life forms still belongs to science fiction.
           克隆已经灭绝的生物的想法仍旧只限于科幻小说中。