深沟坚壁 shēngōujiānbì strong fortifications Definitions Defs Origin Strokes Stroke Words Sentences Sents 深沟 深溝 shēngōu deep ditch deep ditch; trench; deep furrow; deep gully or ravine坚壁 堅壁 jiānbì fortress (literary) a solid wall used for defense; a strong fortress
