短语词组短语Entrench dominance 加强市场支配地位entrench h 挖壕沟以保护entrench detail 进入壕沟entrench shovel 挖壕锹entrench meander 嵌入曲流entrench valley 深切河谷entrench stream 深切河流Further Entrench 进一步巩固 返回 entrench