乔是约瑟芬的简称。

Jo is ___short for Josephine.

我的名字是本杰明，但朋友们简称我为本。

My name's Benjamin, but my friends call me Ben for ___short.

我们经常将美利坚合众国简称为美国。

We often refer to the United States as the U.S. for ___short.