Last Updated
：2025/11/22
oceanic trench
（ plural ）
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(geology, oceanography) A hemispheric-scale long but narrow topographic depression of the seabed.
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oceanic trench
Marine biologists lowered instruments into the oceanic trench to study unique microbial life adapted to extreme pressure.
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Marine biologists lowered instruments into the oceanic trench to study unique microbial life adapted to extreme pressure.
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