byssal notch

例句：

1. 1.The ship's captain had to navigate through the byssal notch to reach the other side of the ocean.
   船长不得不通过海底凹槽导航，到达海洋的另一侧。
2. 2. The diver found a byssal notch filled with coral and sea life.
   潜水员发现了一个被珊瑚和海洋生物填满的海底凹槽。
3. 3. The explorers discovered a byssal notch that led to an uncharted island.
   探险者们发现了一个通往未被探索岛屿的海底凹槽。