潜艇上的声波仪器告诉我们，在海洋底部有一道海脊，横向坐落在冰流方向上。
Acoustic instruments on the submarine told us that there was a ridge at the bottom of the ocean, sitting transverse to the flow of ice.
加利利海是一片独一无二的水域：底部是地下泉水形成的咸水，顶层则是淡水。
The Sea of Galilee is a unique body of water: the bottom part is salt water fed by underground springs, while the top layer is fresh water.
在海湾底部有沙的部分，有时你还会碰到在沙地上休息的大蝠鲼鳐和豹斑鳐，在这我们见过成群的圣海伦海?。
At the bottom of the bay, in the sandy area, occasionally, huge Manta Rays, and often, leopard rays are seen resting on the sandy flats.
在海湾底部有沙的部分，有时你还会碰到在沙地上休息的大蝠鲼鳐和豹斑鳐，在这我们见过成群的圣海伦海?。
At the bottom of the bay, in the sandy area, occasionally, huge Manta Rays, and often, leopard rays are seen resting on the sandy flats.
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