2024年6月26日 · Deep underwater valleys are called submarine canyons. These are narrow steep-sided valleys that cut into the sea floor of the continental slope and can originate either within continental slopes or on a continental shelf.

2024年6月19日 · What is the deepest ravine on Earth? The Mariana Trench is the deepest ravine on Earth, located underwater below the Philippine Plate. It descends 35,827 feet and is considered the deepest part of the world’s oceans.

A ravine is generally a fluvial slope landform of relatively steep (cross-sectional) sides, on the order of twenty to seventy percent in gradient. Ravines may or may not have active streams flowing along the downslope channel which originally formed them; moreover, often they are characterized by intermittent streams, since their geographic ...

The concept of snorkeling in underwater ravines: Involves exploring narrow, deep valleys beneath the ocean’s surface. These ravines are often filled with unique marine life and stunning rock formations.

2024年6月28日 · A ravine is a deep, narrow valley with steep sides. It is typically formed by the erosion of running water, such as a river or stream, and can be found in various landscapes, including mountainous regions and canyons.

2016年7月23日 · 英文解释：A ravine is a very deep narrow valley with steep sides. The soldiers shot down into the ravine. 士兵们向下往深谷里开枪。 The river had worn a ravine between the hills. 那条河在两山之间已造成一个深谷。 A car swerved to avoid a bus and plunged into a ravine. 一辆小车为避开一辆公共汽车急转 ...

gorge: A narrow valley between hills or mountains, typically with steep rocky walls and a stream running through it. ravine: A deep, narrow gorge with steep sides. canyon: A deep gorge, typically one with a river flowing through it.

2025年2月7日 · Prepare to explore the 15 deepest underwater caves in the world. These eerie, bone-chilling depths hold hidden secrets and spine-tingling discoveries. Join us as we count down the most terrifying and awe-inspiring underwater caves.

2023年7月24日 · The underwater ravine has walls up to 5,580 feet (1,700 meters) tall, and at its deepest point the seafloor is around 2.5 miles (4 km) below the ocean's surface.