反义词是unarmed，例如：
1、The soldiers were trained in unarmed combat.士兵接受徒手格斗训练。
2、 He was alone， and unarmed， and far from any help and the night was closing in.他孤身一人，手无寸铁，没有任何帮助而黑夜正在逼近。
3、 They were unarmed， and taken by surprise， and what can two animals do against hundreds?他们手无寸铁，而且遭到偷袭，两只动物怎么对付得了几百只呢
