单词：ocean-floor
ocean-floor的用法和样例：
例句
- The submarine bottomed to observe the ocean floor.潜艇潜入海底观察洋底。
- That the ocean floor is not flat is a known fact.洋底不是平坦的是一个已知的事实。
单词：ocean-floor 相关文章
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Ocean Floor is Prime Target of Mining Industry The next great frontier for the mining industry could be hydrothermal vents that lie deep on the ocean floor. The super-hot flues create deposits of sulfide, which contain precious metals such as gold, s
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万物简史
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