这个词是什么意思？
The northern continent of the Western Hemisphere, extending northward from the Colombia-Panama border and including CENTRAL AMERICA, MEXICO, Caribbean area, the UNITED STATES, CANADA and GREENLAND. The term often refers more narrowly to MEXICO, continental UNITED STATES, AND CANADA.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D009656 · MeSH 2026。
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