The submersible Alvin investigates the Cayman Trough, a transform boundary on the floor of the western Caribbean Sea.
阿尔文潜水器研究开曼群岛海槽，这是西部加勒比海底面上的转换边界。
These islands are actually the peaks of the Cayman Trough, the Caribbean Sea's deepest trench.
这些岛屿实际上是开曼槽的顶端——加勒比海最深的海沟。
These islands are actually the peaks of the Cayman Trough, the Caribbean Sea's deepest trench.
这些岛屿实际上是开曼槽的顶端——加勒比海最深的海沟。
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