sea bed

基本解释

That's because the Antarctic sea bed has a smalllip in it: it rises slowly up the continental shelf, then makes aslight dip before rising again to the shoreline.
因为南极海床有一个小小的裂缝，它会随着大陆架缓慢增加，在再次上升到海岸线时会轻微下沉。
Following the explosion and fire on the rig, the blow-out preventer on the sea bed should have automatically sealed the well, but it failed, resulting in the massive oil spill.
在油井发生爆炸以及油井起火后，海底上的防喷器本来应该自动将油井封住，但是未能做到这一点，导致大规模的石油泄漏。
Researchers working in the Black Sea have found currents of water 350 times greater than the River Thames flowing along the sea bed, carving out channels much like a river on the land.
在黑海进行研究工作的科研人员发现了在海床上奔涌的水流，它们的流量是泰晤士河的350倍，如同陆地上的河流一样冲刷蚀刻出水道。

As well as presumed mineral riches under the sea bed, the sea lanes are a vital route for shipping.
ECONOMIST: South-East Asian summitry
Ibama estimated that 2, 300 barrels of oil oozed out of the sea bed because of the Nov. 9 drilling accident.
FORBES: Transocean Faces Possible Lawsuit After Brazil Oil Spill
Some of the food, together with large amounts of ammonium-rich salmon excreta, drops through the cages on to the sea bed.
ECONOMIST: Pressure is mounting to do something about salmon farms