It sits on its own tiny plate, squeezed between the North American and Caribbean plates and surrounded on all sides by faults.
因为波多黎各坐落在自己的小板块上，挤在北美板块和加勒比板块中间，四周被断层包围。
Caribbean Plate
原声例句
科学60秒 2017年11月合集
中文百科
加勒比板块
加勒比板块是一个大部分为大洋地壳的板块，位于中美洲和南美洲北岸以外的加勒比海。在1968年勒皮雄首次提出的六大板块中，它是美洲板块的一部分。
加勒比板块的面积大约是320万平方千米，它与北美洲板块、南美洲板块和科科斯板块接界。这些边界都是地震活动密集区，频繁发生地震，偶然还会发生海啸；在边界上还有火山喷发。
英语百科
Caribbean Plate 加勒比板块
The Caribbean Plate is a mostly oceanic tectonic plate underlying Central America and the Caribbean Sea off the north coast of South America.
Roughly 3.2 million square kilometers (1.2 million square miles) in area, the Caribbean Plate borders the North American Plate, the South American Plate, the Nazca Plate and the Cocos Plate. These borders are regions of intense seismic activity, including frequent earthquakes, occasional tsunamis, and volcanic eruptions.
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