below the surface

深入
实际上

例句与用法：

A region, realm, or dwelling place conceived to be below the surface of the earth.

下层社会设想在地球表面下面的区域、王国和居住场所

The net is weighted to keep it below the surface of the water.

这个网加了坠因而可没入水面以下。

She dived below the surface, then bobbed up like a cork again a few seconds later.

她潜入水中,几秒钟后像软木塞一样又浮了上来。

The body was visible below the surface of the lake.

尸体在湖水下清晰可见。