trenching
动词 trench:
impinge or infringe upon
同义词:impinge, encroach, entrench, trench
fortify by surrounding with trenches
同义词:trench
cut or carve deeply into
同义词:trench
set, plant, or bury in a trench
同义词:trench
cut a trench in, as for drainage
同义词:trench, ditch
dig a trench or trenches
同义词:trench