nilpotent matrix

例句：

1. 1. The company's decision to invest heavily in renewable energy was nilpotent.
   该公司决定大力投资可再生能源的决定是无效的。
2. 2.The new law is expected to be nilpotent because it lacks teeth.
   新法律预计将是无效的，因为它缺乏执行力度。
3. 3. The scientist found that the experiment was nilpotent due to a small error in the calculations.
   科学家发现实验由于计算中的一个小错误而无效。