地壳和地球下面的地幔的顶部，分为巨大的块，叫做板块。
The crust and the very top part of earth's next layer, the mantle, are divided into huge sections, called plates.
科学家建立了一个能解释大多数地震发生的理论，叫做板块构造。
Scientists have developed a theory, called plate tectonics, that explains why most earthquakes occur.
三条板块边界常相交于一点，这一个交点就叫做板块三联接合点（简称三联点，或称三节点）。
Triple junction is the intersection point among three plate boundaries. The boundary could be tensional, compressional or shear fault.
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