Boundary marker 界碑 ; 边界指点标 ; 界线标记 ; 界标

boundary marker beacon 边界指示标

national boundary marker 国界标志

erect a boundary marker 树立界桩

national boundary marker management 国界标志管理

terminus boundary marker 界桩

a boundary marker 界标

BM Boundary Marker 跑道边界标

shooting boundary marker 射区界标

Weikealin boundary marker 威伊克阿林界碑