For all their professed ideological similarities, North Korea and China are worlds apart.

尽管所声称的意识形态有相似之处，但北朝鲜与中国有着天壤之别。

Their ways of life are worlds apart.

他们的生活方式截然不同。

They decided to get married even though their families were worlds apart.

他们决定结婚,尽管他们俩的家庭背景不大一样.

Did her a world of good; candidates that are worlds apart on foreign policy.

给她很多好处；在外交政策中分歧很大的候选人们

Differences in profession makes one feel worlds apart. I know nothing about business.

隔行如隔山,对做买卖我真是一窍不通.