brink depth

例句：

1. 1. The ship's edge depth is critical for navigation.
   船的边缘深度对于导航至关重要。
2. 2. The scientist found a new edge depth in the ocean floor.
   科学家在海底发现了新的边缘深度。
3. 3. The engineer used a laser to measure the edge depth of the wall.
   工程师使用激光测量墙的边缘深度。