这些发现让我们对这种巨型鳄鱼的生活史有了全新的了解，几千万年前它们曾经漫步在现在美国和墨西哥北部。
The discoveries offer the newest insights into the lives of the giant crocs, which roamed much of what is now the United States and northern Mexico.
地点 ：希拉毒蜥是一种耐力极好、会咬人的动物，它生长在美国西南和墨西哥北部沙漠地带，而它的近亲墨西哥毒蜥通常栖息在墨西哥南部茂密的丛林中。
Location: The Gila monster is found in the desert areas of the southwestern United States and northern Mexico. The Mexican Gila monster is normally found in the dense forests of southern Mexico.
一位美国反劫持专家上周在墨西哥北部被一伙持枪歹徒绑架，从中可见该国绑架团伙行为之猖獗。
Mexico CITY — a U.S. anti-kidnapping expert was abducted by gunmen in northern Mexico last week, a sign of just how bold this nation's kidnapping gangs have become.
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