北美洲最著名的断层是位于美国加利福尼亚的圣安德烈亚斯断层。
The best-known fault in North America is the San Andreas fault in the state of California in the United States.
如果你是美国人，去看全球之声在线，它融合了北美洲以外的博客和其他信息。
If you're an American, read Global Voices Online, a project that aggregates blogging and other material from outside North America.
一些基因和年代测定的研究指出远古美国人可能来自其他地方，而且比北美洲的克伦维斯人来的早。
Some genetic and time-dating studies point to the possibility that ancient Americans came from other places and arrived earlier than Clovis sites in North America.
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