berm
noun [ C ] environment specialized uk/bɜːm/ us/bɝːm/
（通常为隔开或保护某处而建的）狭长的突起地带;护道，护堤
a flat or raised strip of land, often created in order to separate or protect an area
The sand is deposited in berms or sand bars in shallow water. 在浅水区，沙子堆积在护堤或沙洲里。
They constructed a berm designed to protect homes from flooding. 他们修建护堤以保护家园免受水灾。