noun🔗Share弩炮，投石机 An ancient military engine, in the form of a crossbow, used for hurling large missiles."During the siege, the Roman army used a ballista to launch massive stones at the enemy's castle walls. "在围攻期间，罗马军队使用了一种叫做弩炮的投石机，向敌人的城堡墙壁发射巨大的石块。militaryweaponmachinewararchaeologyhistorytechnologyChat with AIVocabulary GamePractice Reading
