?沟状断层
... trench 深海槽 trench fault 沟状断层 trenching 挖沟勘探 ...
脊 ; 海岭
沟 ; 海沟
沟沟转换断层
The trench is a highly active fault line running north from New Zealand towards Tonga and Samoa.
BBC: Undersea mountains march into the abyss
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