Research in the United States indicates that more Mexicans are now leaving the US than entering it reversing a trend spanning half of a century.

美国研究指出墨西哥移民人口正在减少，持续了半个世纪的移民正在发生改变。

Twenty states have raised the legal drinking age to 21, reversing a trend in the 1960s to reduce it to 18.

现已有20个州把合法饮酒年龄提升到21岁，由此改变了20世纪60年代曾把合法饮酒年龄降至18岁的趋势。