落后于

I was in retard of them in real knowledge.

我在实际知识方面他们。

Britain's economic development must lag behind that of almost every other industrial nation.

英国的经济发展肯定几乎所有的其他工业国。

We are lagging far behind our European competitors in using new technology.

我们在使用新技术方面远远我们的欧洲手。

In this special field she is facile princeps, and has left all competitors behind.

在这一特定领域里她出类拔萃的, 并使所有的竞争者都她。

The building work is now behind schedule, but contractors are confident that they can make up for lost time.

这项建筑工程目前预定计划，包人有信心把失去的时间补回来。