The amount of water in the ocean would have formed the equivalent of a 1, 800 foot layer spread out over the entire planet.
如果将海洋所含总水量在火星表面铺展开，相当于给其表面铺了一层厚达1800英尺的水层。
The amount of water in the ocean would have formed the equivalent of a 1, 800 foot layer spread out over the entire planet.
如果将海洋所含总水量在火星表面铺展开，相当于给其表面铺了一层厚达1800英尺的水层。
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