词语

坚壁清野加固壁垒清除郊野。例一边要坚壁清野一边要架云楼，施炮火。——清吴趼人《二十年目睹之怪现状》英fortify the defense works and to leave nothing usable to the invading enemy;

坚壁把物资转移走或埋藏起来使不落到敌人的手里。英place in a cache; cache; hide supplies to prevent the enemy from seizing them;

深沟坚壁深的战壕和坚固的城墙。指坚固的防御工事。