Doctor Ruhli presented his case for the value of mummies for medical research at a meeting of the American Association of Anatomists.

VOA: special.2010.06.29

The only thing worth more than the slaves in the American economy of the 1850s was the land itself, and no one can really put a dollar value on all of the land of North America.

十九世纪五十年代的美国经济中,唯一价值超过奴隶的就是土地,而且没有人能够真正对,美国北部的土地进行估值

耶鲁公开课 - 美国内战与重建课程节选

American investors and bankers were afraid their money would drop in value because of the use of silver.

VOA: special.2010.06.24

At that time, both gold and silver were used to support the value of the American dollar.

VOA: special.2010.06.24

Yet some American researchers have questioned the value of the I.O.M.proposals.

VOA: special.2009.06.02

The value of the euro currency has plunged for example, which makes American exports - key to the U.S.economic recovery - less competitive.

VOA: standard.2010.02.26