Images of Uncle Sam were also used on signs during World Wars One and Two to persuade Americans to join the Army.

VOA: special.2009.09.25

At least if we look at the statistics, just about every single one of you, after you leave Harvard,will join an organization, an organization that is a social enterprise, not for profit,something to better the world.

看一下统计数据，你们每个人，离开哈佛后，都将加入公司，这个组织是个社会企业，非盈利机构，只为贡献社会而存在的。

哈佛公开课 - 幸福课课程节选

Join us as we explore the world of puppetry and visit an organization in Atlanta, Georgia that works to support this special art form.

VOA: special.2009.09.23

He urged other nations to join in an effort to free the world of nuclear weapons.

VOA: special.2009.04.11

For the fans,it will be a once-in-a-lifetime opportunity to join the celebrations and see the world's greatest football players compete at home in Africa.

VOA: standard.2010.02.10

When completed in several months time, the Mombasa port will join some 20 others in the world participating in the so-called Megaports Initiative set up by the U.S.government in 2003.

VOA: standard.2009.05.01

World leaders and dignitaries have gathered to join in the 20th anniversary celebrations, which include open air concerts, fireworks,and the symbolic collapse of a wall of brightly painted oversize dominoes.

VOA: standard.2009.11.09