The Earth's crust is thought to be divided into huge, movable segments, called plates, which float on a soft plastic layer of rock.
人们认为地壳分成了巨大的、可移动的部分,称为板块,这些板块漂浮在柔软可塑的岩石层上。
It is broken into several large pieces called plates, which effectively float on the liquid mantle.
它分为几个大的小块称为板材,有效地漂浮在液体地幔。
The crust and the very top part of earth's next layer, the mantle, are divided into huge sections, called plates.
地壳和地球下面的地幔的顶部,分为巨大的块,叫做板块。
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