It is a long-held dream: an artificial heart to replace one that is damaged or diseased.
用人造心脏来替代病变或者损坏的心脏一直是医学界的一个梦想。
2
We may wish to provide the blind with artificial eyes that enable them to see-and this is not just a silly, unrealizable pipe dream.
我们说不定能为盲人提供人造眼睛，使他们重见光明——而这已不只是一种天真的、不可实现的幻想。
3
The mass merchandisers are really good at creating artificial need, and the dream for the need is pressed into the masses through the media and television commercials and infomercials.