He agreed to their visit with the proviso that they should stay no longer than one week.

他同意他们来做客，但条件是逗留不得超过一周。

《牛津词典》

You can borrow this book, with the proviso that you return it to me within a week.

你可以借这本书，条件是你要在一周内还我书。

youdao

Anyone can use them free, with the proviso that Carnegie Mellon doesn't offer credit.

任何人都可以免费进行使用，但是附带说明卡耐基梅隆大学不提供学分。

youdao

It was done on the proviso that no interview would be released until after the contributor had died.

BBC: The tapes are being held at Boston College

The subsidy was included in the 2003 law with the proviso that the government payments would begin to phase out in 2010.

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His biggest gift came in 1997 with the proviso that he be allowed to send his finance chief to scrutinize Liberty's books.

FORBES: Magazine Article