| environ. |
beach The unconsolidated material that covers a gently sloping zone, typically with a concave profile, extending landward from the low-water line to the place where there is a definite change in material or physiographic from (such as a cliff), or to the line of permanent vegetation (usually the effective limit of the highest storm waves); a shore of body of water, formed and washed by waves or tides, usually covered by sand or gravel, and lacking a bare rocky surface (覆盖一个逐渐倾斜地区的松散物质，一般是从一个有凹面的地方从浅水线延伸至陆地，而且有着明确的材质或地理上的物理变化(比如悬崖)，或者延伸至永久植物线(通常对于限制风暴的最高波很有效)。或者出现在水体的岸边，被波浪或浪潮冲刷而形成，通常被沙子或砾石覆盖，没有裸露的岩石表面。) |
