他是一位著名的科学家，他的理论将改变世界。
He is a famous scientist whose theories would change the world.
一位著名的英国科学家也不赞成这种技术。
A famous British scientist also was not for this kind of technology.
达尔文的父亲是一位著名的医生，也是一位更伟大的医生和科学家的儿子。
Darwin's father was a well known doctor and the son of an still greater doctor and scientist.
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