I spent a productive hour in the library.

我在图书馆的一个小时很有收获。

youdao

I spent a very productive hour in the library.

我在图书馆里的这一小时收获很大。

youdao

I spent a very productive hour in the library.

我在图书馆度过了一个非常有价值的一个小时。

youdao

"The French, when they work, are quite productive--in production per hour they are second in Europe to Norway, " says Favre, who notes that the most productive French workers will likely get the most overtime.

FORBES: Vive la Difference

Over the last three decades, American factories have become vastly more productive in terms of output per hour of labor.

FORBES: Connect

On average knowledge workers could regain an hour per day through more productive communication activities.

FORBES: Unified Communications: Still Not Unified ... But Getting Closer