A: Have you ever traveled across the oceans?
A：你曾经跨越过大洋吗？

B: No, I have only seen the ocean from the coast.
B：没有，我只从海岸看过海洋。

1) 覆盖地球表面的巨大水体

2) 指代极其广阔的领域或范围

3) 海洋生态系统的统称

1. 海洋；大洋

noun

1. Large bodies of salt water that cover most of the Earth's surface.