新屏幕格式的引入被推迟了四分之一个世纪，而颜色尽管在接下来的二十年里被用于特制产品，它也是直到二十世纪五十年代才成为一种常态。

The introduction of new screen formats was put off for a quarter century, and color, though utilized over the next two decades for special productions, also did not become a norm until the 1950s.

youdao

二十年后，他和孩子们取得了联系，那时他们才二十出头。

Twenty years later, he got in touch with the children, who, by then, were in their early twenties.

youdao

二十年前，只有单位才拥有小轿车，私人是无权买的。

Twenty years ago, cars were owned only by organizations; private individuals couldn't buy them.

youdao

Harvard has residential colleges of the kind and Princeton only had it in the last twenty years.

哈佛大学有住宿学院,普林斯顿是在最近二十年来才建立住宿制的。

普林斯顿公开课 - 人性课程节选