DFSR

例句：

1. 1. DFSR stands for "Defensive Survival Reaction".
   DFSR 代表“防御性生存反应”。
2. 2. The DFSR is designed to protect against cyber threats.
   DFSR 设计用来保护免受网络威胁。
3. 3. The DFSR system was developed to improve the accuracy of target detection.
   DFSR 系统被开发出来，以提高目标检测的准确性。