ocean trench

• 海沟

ocean trench的用法和样例：

例句

1. The greatest depths of the ocean are found in the ocean trenches.
   海洋的最深深度是在这片海沟中测出的。
2. Consider the abyssal valley called the Marianas Trench, lying west of Guam.
   留心一下位于关岛西面的名叫马利亚纳海沟的深海谷地。