selt anti-dual function

例句：

1. 1. The device has a dual function that allows it to perform two different tasks simultaneously.
   这个设备具有双重功能，可以同时执行两项不同的任务。
2. 2. The software has an anti-dual function that prevents malicious attacks on the system.
   该软件具有反双功能，防止对系统进行恶意攻击。
3. 3. The design of this product has an anti-dual function that reduces user errors and improves efficiency.
   该产品的设计具有反双功能，可以减少用户错误并提高效率。