The theory has been superseded by more recent research.

这一理论已为新近的研究所取代。

Hand tools are relics of the past that have now been superseded by the machine.

手工工具是过去的遗物，现在已被机器取代。

The old system has been superseded.

旧制度已被取代了。

Electric light has superseded gas light.

电灯已经取代了煤气灯。

He was superseded by a young girl for the post.

一位年轻的姑娘取代了他的职位。