You may conceive a new world in the atomic age.

你可以设想出原子时代界。

It is the story of a new world that became a friend and liberator of the old.

这是一界发展史，是一后浪推前浪历史。

We can't exclude the possibility that some warmongers will run the risk of starting a new world war.

我们不能排除有争贩子会冒险发动一场界大可能性。

New world records in the track and field events are chalked up from time to time in the past few years.

近几年来经常出现界田径纪录。