海词手机词典

The oceanic crust lies beneath the ocean floor and has a thickness of five to twelve kilometers. On the upper surface, there is a thin layer of unconsolidated sediment that rests on the basement layer composed of basalt.

播放读音 播放读音

以上内容独家创作,受著作权保护,侵权必究

海词词典,十七年品牌