That same year, then President John F.Kennedy vowed in a speech before the U.S.Congress to put a man on the moon.

VOA: standard.2009.07.16

and the same for favour, they spell f-a-v-o-r, we put u in it,

同样地，对于发烧这个单词，他们拼写成f-a-v-o-r，我们要加一个u在里面，

美式英语和英式英语 - SpeakingMax英语口语达人

A U.S.Air Force spokesman described the maneuvers of pilots aboard its F-15e Strike Eagle.

VOA: standard.2009.11.15

His comments reflected what other officials have said that ending the F-22 program is just one part of the effort to shift the focus of U.S.defenses away from what they see as the relatively remote possibility of a war with a major power and toward the types of smaller-scale conflicts of recent years.

VOA: standard.2009.07.21