我们无力制止人们发明和生产那些使用起来必将摧毁文明社会本身的致命武器。这不是双重否定啦，要有两个否定词或含否定含义的（如hardly，barely等）才算哦~LZ是不是漏打一个not？we cannot afford to NOT stop devising and manufacturing weapons so deadly that they cannot be used without destroying civilization itself?这句话的难点在定语从句啦，先行词是weapons，后面so deadly that they cannot be used without destroying civilization its...
