围护沟 Perimeter Ditch

护患沟通 nurse-patient communication ; communication between nurse and patient

以壕沟防护 entrench

挖壕沟以保护 entrench

沟头防护 [林] gully head protection ; protection of gully head

护理人际沟通 Nursing Communication

沟道防护林 [林] gully erosion control forest

沟头防护工程 gully head protection works ; protection measures of gully head ; protective works of gully head