广播电视英语短句 第 42 课：出访拉丁美洲-4

The Pew Hispanic Center says more than half of Mexican immigrants are undocumented . 皮尤拉美裔中心说，超过一半的墨西哥移民没有正式文件。

They represent about sixty percent of the estimated twelve million illegal immigrants in the United States. 这占据了美国大约 1200 万非法移民总数的 60% 。

From Mexico, President Obama traveled Friday to the Caribbean nation of Trinidad and Tobago for the Fifth Summit of the Americas. 奥巴马周五从墨西哥返回，到达加勒比国家的特里尼达和多巴哥参加美洲峰会。

The meetings bring together leaders of thirty-four countries. 此次峰会有 34 个国家出席，唯一没有被邀请的是古巴。

The only country not invited was Cuba. But earlier this week, President Obama lifted some restrictions on Cuba. 但是本周初，奥巴马对取消了一些针对古巴的限制措施。