be ground to dust造句

• Marine corps vehicles and battle tanks are being ground to dust , new types of weapons and small craft are needed , and equipment for the navy seabees must be replaced quickly
  海军陆战队的装甲车和主战坦克日益老旧，新式武器和小型装备的需求呈现，另外海军工程部队的装备也需要尽快更新。