Grayson says that while Felipe Calderon's campaign against the powerful drug lords is a necessary effort to protect the nation from criminal enterprises, it will not end narcotics trafficking.

VOA: standard.2009.06.09

These are two government sponsored enterprises mortgages from banks and other lenders.

这是两家美国政府赞助企业,从其他借贷者手里买如贷款。

斯坦福公开课 - 经济学课程节选