我买了一些使用的书，但是必须买一套书，实际上2本书，法律计算机办公室的。

I bought some used books but had to buy one set of books, in fact 2 books, for the legal computer office.

youdao

我不要把那台又笨又大的计算机放在我的办公室。

I don't want that hulking great computer in my office.

《牛津词典》

他回到办公室，在计算机上更新了工作日程。

He was back in the office, updating the work schedule on the computer.

《柯林斯英汉双解大词典》