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来源:雅诚德英语网
These seas have a typical oceanic floor, except that the floor is overlaid by several kilometers of sediment.
这些海洋有一个典型的海底,只不过这个海底被几公里厚的沉积物覆盖。
These seas have a typical oceanic floor, except that the floor is overlaid by several kilometers of sediment.
这些海洋有一个典型的海底,只不过这个海底被几公里厚的沉积物覆盖。