怎么算大于小于简介：The so-called seawall is a steep wall built with stones or strips of stone along the coast to block tides and waves, and to prevent enemy ships from landing. It is also called a steep wall seawall.
The so-called seawall is a steep wall built with stones or strips of stone along the coast to block tides and waves, and to prevent enemy ships from landing. It is also called a steep wall seawall.
