utopian

1. ADJ If you describe a plan or idea as utopian, you are criticizing it because it is unrealistic and shows a belief that things can be improved much more than is possible. (计划、主意等) 空想的; 不切合实际的[表不满]

He was pursuing a utopian dream of world prosperity. 他那时在追求一个不切实际的世界繁荣之梦。

2. ADJ Utopian is used to describe political or religious philosophies which claim that it is possible to build a new and perfect society in which everyone is happy. (政治或宗教思想) 空想的; 乌托邦式的[正式]

His was a utopian vision of nature in its purest form. 他对大自然的看法是一种最纯粹的乌托邦式看法。