abyssal

音标发音

It flows down the sea shelf and out into the abyssal plain much like a river on land.
和陆地上的河流非常相似，它从海底大陆架流向深海平原。
Little Hercules is cruising over hydrothermal springs, abyssal muds and the rocky tops of seamounts—a kind of underwater mountain that rises from the sea floor.
“迷你大力神”在热水泉中游动，在深海的泥沙中穿梭，还时不时跨过海底山的顶部岩石，这里的海底山是一种海床上隆起的水下山脉。
Over the decade, census scientists have explored every ocean realm from near-shore waters to the abyssal plains—which cover a greater area of the Earth than all its land.
数十年来，科学家们探索了所有海洋领域，从近岸水体到深海平原——它们在地球上覆盖的面积比陆地总面积还大。

Boris Worm says that's not surprising given how little we know about the abyssal plain.
NPR: Down Deep, An Unexpected Fish Boom
He whispered in his original language, the one he rarely used, so glottal, abyssal.
NEWYORKER: Deniers
Dr. WORM: This is only the first long-term look that anybody had at the abyssal plains that I'm aware of.
NPR: Down Deep, An Unexpected Fish Boom