(Speaking) The prime minister noted the presence of election monitors to help prevent any fraud.

VOA: standard.2010.03.07

They help prevent fraud, misrepresentation, manipulation of information in stocks and bonds.

它帮助人们防止诈骗，虚报和巧妙利用证券股票市场中，信息不对称而牟利等事情的发生。

耶鲁公开课 - 金融市场课程节选

They help prevent fraud, misrepresentation, manipulation of information in stocks and bonds.

它帮助人们防止诈骗，虚报和巧妙利用证券股票市场中，信息不对称而牟利等事情的发生。

耶鲁公开课 - 金融市场课程节选