Just like we saw in our experiments, saltier colder water is now denser, and thus heavier, so it sinks deep into the ocean and moves along the depths until it can rise to the surface.

就像我们在实验中看到的，含盐量更高更冷的水的密度更大，因此更重，所以它沉入海洋深处，一直向下移动，直到它可以上升到表面。