海沟

缩写：hg

拼音：hǎi gōu

解释：深度超过6,000米的狭长的海底凹地。两侧坡度陡急，分布于大洋边缘。如太平洋的菲律宾海沟、大西洋的波多黎各海沟等。

更新时间：2024-10-05 19:13

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