Unluckily, visitors have caused many problems.

不幸的是，游客造成了许多问题。

youdao

This has caused many problems, such as an increase in obesity and depression among children.

这导致了许多问题，例如儿童肥胖和抑郁症的增加。

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Although it has propelled the industrialization and urbanization in our country, it has also caused many problems.

它在对我国的工业化和城市化积极推进的同时，也产生了许多问题。

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Financial Products. That division caused many of the company's problems.

VOA: special.2009.03.20

The third effect will be on the collateralised-debt obligation (CDO) market, which caused so many problems last year.

ECONOMIST: The fallout from the bankruptcy of Lehman Brothers

And one of the things that's essential is the comment you made earlier about the thousand additional officers that to finally and permanently correct some of the issues that have caused so many problems in the city, we're going to need a larger police department.

NPR: LAPD Chief on Making the City Safer

JPMorgan also had programming and systems errors that caused many of the problems.

FORBES: Naked Fines