I spent a productive hour in the library.
我在图书馆的一个小时很有收获。
I spent a very productive hour in the library.
我在图书馆里的这一小时收获很大。
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。
That may have been the most productive half-hour of Weinberg's life.
那也许是Weinberg一生中最有价值的半个小时。
That may have been the most productive half-hour of Weinberg's life.
那也许是Weinberg一生中最有价值的半个小时。
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